Thomson received his early architectural training in England. Coming to the United States as a young man, he served in the Supervising Architect's office of the Treasury Department and later had charge of the construction of the Post Office in New York City. For the past twenty-five years he was consulting architect to the J. L. Mott Iron Works. He was one of the founders of the Brooklyn Chapter of the American Institute of Architects and served for several years as its secretary. He was elected a Fellow of the American Institute of Architects in 1896.
| period | name | type |
|---|---|---|
| American Institute of Architects | Fellow |