Thomas Edison National Historical Park: The Laboratories and Glenmont Estate
Located in West Orange, New Jersey, the Thomas Edison National Historical Park preserves the environment where one of history's most prolific inventors lived and worked. The park is divided into two primary properties: the expansive second Edison Laboratories complex and Glenmont, Edison's private residence located approximately 0.5 miles (0.80 km) to the west.
Together, these sites offer a glimpse into the intersection of industrial innovation and domestic life during the late 19th and early 20th centuries.

The Edison Laboratories Complex
Established in 1887, the laboratory complex served as a dedicated industrial facility for the research and development of Edison's inventions. This site was not a single building but a sprawling campus of more than a dozen structures designed to support a wide array of scientific disciplines.
The research conducted here spanned multiple fields, including:
- Electricity and metallurgy
- Chemistry
- Photography
- Motion pictures
To support this multidisciplinary work, the complex featured a private library attached to the main laboratory and specialized machine shops capable of producing both heavy tooling and high-precision prototypes.
The Black Maria
One of the most significant structures on the grounds was the Black Maria, recognized as the world's first movie studio. To solve the problem of changing light throughout the day, the building was mounted on a turntable, allowing it to be rotated to keep the film subjects illuminated by sunlight. While the original served as the birthplace of early cinema, a replica was constructed in 1954 to preserve this legacy.
Glenmont: The Edison Family Home
Edison's residence, known as Glenmont, is a Queen Anne style mansion designed by architect Henry Hudson Holly. Built between 1880 and 1882 for Henry Pedder, the home was a marvel of modern convenience for its time, featuring indoor flush toilets, hot and cold piped water, and a gravity-convection central heating system.
The estate changed hands after Pedder was forced to surrender the property due to the embezzlement of funds from his employer. Edison purchased the home in 1886 for $125,000 (approximately $4,479,167 in today's value). He moved into the 23-room mansion with his second wife, Mina, and his three children from his first marriage.

Once settled, Edison expanded the home by adding six additional rooms and installing electrical wiring. The interior remains preserved in the Eastlake style, a late 19th-century design characterized by ornate, geometric carvings. Glenmont served as the childhood home for Edison's children with Mina, including industrialist Theodore Miller Edison and Charles Edison, who later became the governor of New Jersey.
Key Facts
- Location: West Orange, New Jersey.
- Laboratory Founding: Built in 1887 for multidisciplinary R&D.
- Black Maria: The first movie studio, featuring a rotating design for sunlight optimization.
- Glenmont Purchase: Bought by Edison in 1886 for $125,000.
- Architecture: Queen Anne style exterior with Eastlake style interiors.
- Family Legacy: Home to future NJ Governor Charles Edison and industrialist Theodore Miller Edison.
| Feature | Edison Laboratories | Glenmont Estate |
|---|---|---|
| Primary Purpose | Industrial Research & Development | Private Family Residence |
| Key Date | Established 1887 | Purchased 1886 |
| Notable Feature | Black Maria Movie Studio | Queen Anne Architecture |
| Specializations | Electricity, Chemistry, Metallurgy | Eastlake Style Interiors |
Frequently Asked Questions
What was the Black Maria?
The Black Maria was the world's first movie studio. It was uniquely designed to rotate on a turntable, ensuring that the film subjects remained in the sunlight regardless of the time of day.
How did Thomas Edison acquire Glenmont?
Edison purchased the estate in 1886 for $125,000 after the original owner, Henry Pedder, was forced to surrender the property due to the embezzlement of funds from his employer.
What architectural styles are present at Glenmont?
The exterior of the mansion is designed in the Queen Anne style, while the interior furnishings and decor reflect the Eastlake style.
What disciplines were researched at the Edison Laboratories?
The laboratories supported research in a wide variety of fields, including electricity, chemistry, metallurgy, photography, and motion pictures.
Who were the notable family members who lived at Glenmont?
In addition to Thomas and Mina Edison, the home was where their children grew up, including Theodore Miller Edison, an industrialist, and Charles Edison, who served as the governor of New Jersey.