Hill-Stead Museum welcomes its 1 millionth visitor since opening as a museum in 1947.

Hill-Stead: The Country Place of Theodate Pope Riddle (Princeton Architectural Press), the museum’s first major publication.

Dearest of Geniuses published, the first biography about Theodate Pope Riddle.

Hill-Stead Museum’s historic house is designated a National Historic Landmark.

Hill-Stead Museum opens to the public on April 17, 1947.

On August 30, 1946, Theodate Pope Riddle passes away at Hill-Stead. Her last will and testament establishes Hill-Stead as a…

On June 8, 1945, Theodate leases use of Avon Old Farms School to the U.S. Army for a convalescent hospital…

John Wallace Riddle passes away at Hill-Stead on December 8, 1941.

Through the Winter and Summer of 1935, Theodate and John tour through Europe and Egypt, where they visit the pyramids.

Theodate becomes the 5th female licensed architect in CT, when the state first initiates a licensing requirement.