Doc Zimmerly’s Southern End House of Horrors

Mechanics Grove is the kind of place people drive past every day without a second thought. Situated along U.S. Route 222, a few miles south of Quarryville in Lancaster County’s southern end, it is a blink-and-you-missed-it crossroads. Nothing about the village suggests notoriety. Yet in April of 1935, it was overrun by thousands of macabre souvenir hunters seeking a memento from what newspapers dubbed a “House of Horrors.”

Since the hamlet’s earliest days—its name appearing in Lancaster newspapers as early as 1847—Mechanics Grove was quiet enough that local gossip carried farther than traffic noise. When neighbors spoke of oddities, they tended to be small ones: a light seen too late at night, an argument overheard through an open window, a farmhouse that felt uneasy to step near after dark. Long before it drew official attention, the old stone farmhouse at the crossroads had a local reputation for being unpleasant. Some called it haunted, though no one seemed able to say by what. It was the kind of rumor rural places collect without effort, whispered and then forgotten.

In time, those whispers found a name.

Harry Clifford Zimmerly was born in Beaver County in 1868 and trained as a physician at the Cleveland University of Medicine and Surgery. He settled first in western Pennsylvania, married Etta Bond, and raised five children. What kind of doctor he was in those early years is difficult to say. Records place him in Hazelwood, a neighborhood of Pittsburgh, active in local Democratic politics, ambitious enough to seek office, and visible enough to attend a national convention. By middle age, however, his life had begun to fracture.

By 1914, Zimmerly had abandoned his family and left Pittsburgh behind. After an unsuccessful attempt to establish himself in Philadelphia, he moved south to Nottingham in Chester County, taking over the practice of a retiring physician. It was during this period that he moved into the Mechanics Grove farmhouse, a property that would become inseparable from his name.

Accounts from the years that followed describe a man in steady decline. Zimmerly drank heavily. He ran his practice poorly. In 1917, he was arrested for driving under the influence after crashing his car into a wagon and a team of horses. The following year, his oldest son was killed in Pittsburgh, struck by an automobile while riding a bicycle. Personal tragedy did not correct his course. If anything, it deepened the habits that were already pulling him under.

Zimmerly converted part of the farmhouse into a private hospital. Patients came quietly and left, if they left. Neighbors soon suspected what police reports and newspapers would later describe as “illegal operations.” In the restrained language of the day, this was a euphemism for abortions. Prior to 1973, this procedure was a felony. Its criminal nature drove desperate women seeking secrecy underground to unlicensed clinics like Zimmerly’s.  

In August of 1919, those suspicions surfaced publicly. Zimmerly was arrested after his teenage housekeeper, Mary Hanna, accused him of abuse that began when she was fourteen. The district attorney described years of coercion and exploitation. Zimmerly denied the allegations, and prosecutors eventually agreed to drop the most serious charges. He was convicted only of performing an illegal operation and sentenced to one year in prison. Even then, his life did not slow. He was arrested again days later for non-support of his estranged wife and injured in yet another car accident in Quarryville.

He served his twelve-month sentence and returned to the farmhouse.

For a time, Zimmerly seemed to regain a measure of respectability. He married again, to a much younger woman named Viola Pepper, and presented himself as a country doctor. That stability did not last. Their infant son died in 1924. Zimmerly resumed heavy drinking and was arrested repeatedly for disorderly conduct. By 1927, Viola had left him, taking their daughter with her. Facing the Great Depression with little income and mounting obligations, Zimmerly applied for public assistance and quietly returned to performing the same illicit medical services that had brought him trouble before.

It was in the spring of 1935 that the quiet pattern broke for good.

Gladys Lawson was twenty-six years old, a mother of two from Calvert, Maryland. She arrived at the Mechanics Grove farmhouse as a patient, seeking care that could not be obtained openly. Her sister visited her on March 13 and found her in bed, weak and suffering. When asked when she might return home, Gladys groaned, “God knows when.”

It was the last time her family would see her alive.

Days passed. Zimmerly refused to answer questions about her condition. When Gladys’s sister came to the farmhouse in person, the doctor threatened her with a shotgun. The family reported Gladys missing.

On April 3, county detectives and state police raided the farmhouse. They did not find Gladys, but they found her clothing. Inside, they also discovered another patient, seventeen-year-old Elsie Miller of Rising Sun, Maryland. Elsie was gravely ill. Her mother admitted that Zimmerly had subjected her daughter to multiple operations during the previous week. Elsie was rushed to Lancaster General Hospital.

Zimmerly was taken into custody. When questioned, he gave rambling explanations for Gladys Lawson’s disappearance and appeared to investigators to be under the influence of drugs. He claimed he had driven her to Lancaster and left her there. Others told a different story.

Blanche Stone, a former nurse and housekeeper at the farmhouse, came forward. She stated that Gladys Lawson had died from a botched March 16th procedure. According to her account, Gladys moaned throughout the night, gasping for breath. Shortly after midnight, the sounds stopped. Zimmerly came downstairs and told her simply that Gladys was gone. By morning, the body had disappeared.

When authorities searched the property, neighbors reported hearing screams and groans in the night and recalled Zimmerly’s car leaving at all hours, sometimes not returning for days. The farmhouse, already viewed with suspicion, became a focus of growing alarm.

Reporters who entered the building described conditions that defied any notion of medical care. The cellar held barrels of whiskey. Narcotics were found among piles of filthy bedding and discarded bottles. Surgical instruments were stored carelessly. The operating area, if it could be called that, was little more than a broken-down reclining chair draped in soiled blankets, with a spittoon nearby.

As investigators searched for Gladys Lawson’s remains, Zimmerly was charged with performing illegal operations and violating federal narcotics laws. Then, bone fragments were discovered in the ashes used to cover the driveway. A jaw fragment with part of a tooth still attached was among them. Police quickly filled an entire cigar box with bone fragments.

As investigators searched for Gladys Lawson’s remains, Zimmerly was charged with performing abortions and violating federal narcotics laws. Then, bone fragments were discovered in the ashes used to cover the driveway, including a jaw fragment with part of a tooth still attached. Soon, an entire cigar box was filled with bone fragments.

The discovery ignited a frenzy. Thousands of people descended on Mechanics Grove, crowding the roads and fields, searching for ghoulish relics that Zimmerly might have scattered about the property. Neighbors believed there were other victims, women who had vanished after visiting the farmhouse. Newspapers repeated the speculation. State police attempted to keep order as the property was trampled and stripped.

Among the witnesses was Richard Parker, a bootlegger and handyman who worked for Zimmerly. He told investigators that he sharpened butcher knives and watched through a window as the doctor dismembered Gladys Lawson’s body in the garage. Later testimony would prove inconsistent, sometimes erratic, influenced by Parker’s own addiction and instability. Still, bloodstains, saws, and knives were recovered. Court testimony and newspaper accounts described cans of greasy residue in the cellar that experts said bore signs of decomposed human tissue.

While the investigation dragged on, Elsie Miller recovered. Her survival stood in stark contrast to Gladys Lawson’s disappearance. Others who may have sought Zimmerly’s services were never identified with certainty. Their absence remained a matter of rumor and dread rather than physical proof.

In April, forensic specialists examined the bone fragments recovered from the property. Dr. John W. Rice of Bucknell University testified that they belonged to a young adult woman and showed signs of having been cut with a saw. The district attorney announced that the remains were those of Gladys Lawson. Despite this, prosecutors concluded that they could not prove murder. The case would proceed on charges related to illegal operations and narcotics.

Zimmerly was indicted in June of 1935. He offered no meaningful defense. Testimony detailed the procedures performed, the drugs administered, and the events surrounding Gladys Lawson’s death. A jury convicted him of performing an illegal operation that resulted in her death. He was sentenced to 7½ to 15 years in prison and sent to Eastern Penitentiary.

The farmhouse at Mechanics Grove was sold at a sheriff’s sale the following year. Over time, it was repurposed, altered, and eventually converted into a multi-unit residence that remains in use today.

On August 29, 1942, Zimmerly was found unresponsive in his cell at Eastern Penitentiary after suffering a stroke. He lingered for three days before dying of heart failure at the age of seventy-four, with less than three months of his sentence left to serve. According to the prison captain, Zimmerly briefly regained consciousness near the end—long enough to murmur two words before his heart stopped: House… house.

What may have been the greatest horror of all was not what happened in the farmhouse, but what followed. Gladys Lawson’s remains were never claimed by her family. In January of 1936, fragments of her bones and pieces of her clothing were placed on public display at the Pennsylvania Farm Show in Harrisburg as part of a State Police exhibit on forensic science. Visitors passed by in steady lines. Ultimately, Gladys Lawson was denied both privacy in life and dignity in death.

Planning Your Visit

The former Zimmerly farmhouse still stands in East Drumore Township at the intersection of Church Road and Route 222. It is a privately owned, multi-unit residential property with no public access. Visitors should limit any viewing to what can be seen from the street and respect the privacy of those who live there.

Ghost, Monsters, & Tales of Adventure

Uncharted Lancaster’s Ghosts, Monsters, and Tales of Adventure takes readers on a spine-tingling journey through Lancaster County’s haunted history, eerie legends, and hidden treasures. From ghostly apparitions to outlaw loot, these 64 true local stories blend real history with gripping folklore.

Uncharted Lancaster Podcast

Take an even deeper dive into the story with the Uncharted Lancaster Podcast in this Season 1 episode about Doc Zimmerly’s House of Horrors.

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Resouces

• Intelligencer Journal Fri, Apr 05, 1935 ·Page 1
• Lancaster New Era Fri, Apr 05, 1935 ·Page 1
• Lancaster New Era Sat, Apr 06, 1935 ·Page 1
• Sunday News Sun, Apr 07, 1935 ·Page 1
• Lancaster New Era Tue, Apr 09, 1935 ·Page 16
• Intelligencer Journal Tue, Apr 23, 1935 ·Page 1
• Infamous crimes of Lancaster County: A southern-end ‘house of horror’ in 1935