After a few months with architects Shepley, Rutan & Coolidge he traveled to Paris, where he sat for and passed the entrance examinations to the École des Beaux-Arts.

After Kehoe's sudden death in 1952 the firm became Perry, Shaw, Hepburn & Dean.

[5] The firm was renamed several times until arriving at Perry Dean Rogers Architects, its current (2023) name, in 1982.

In the 1920s Perry, Shaw & Hepburn emerged as one of the United States' leading designers of Colonial Revival buildings.

Perry died April 4, 1975, in a nursing home in North Andover, Massachusetts.

[5] Works in private practice include: By the 1970s, the firm of Perry, Shaw & Hepburn and its successors had completed about a thousand projects.