Edwin H. Gaggin (1866-1955) and Thomas Walker Gaggin (1871-1945) both graduated from the School of Architecture at Syracuse University.

Edwin H. Gaggin also studied at Columbia University; Thomas Walker Gaggin attended L'École des Beaux Arts in Paris.

The firm designed various buildings in the Syracuse area.

• Masonic Temple, 318-322 Montgomery Street, Syracuse, NY. Extant.

• YMCA Building, Syracuse.

• Crouse Hinds Factory, Syracuse.

• St. Joseph Hospital Additions, Syracuse.

• Smith Hall, Syracuse University.  Extant.

• Smith Tower, Seattle.  Extant.