Partner, Hatherton and McIntosh, Architects, Tacoma, WA, c. 1891- ; an article in the Tacoma Daily Ledger indicated on 01/01/1891 that Hatherton and McIntosh had formed a firm. The partnership was short-lived, as Edward A. Hatherton committed suicide in San Francisco, CA, in 1896. (See: "The mystery is solved (commits suicide at San Francisco)," Tacoma Daily Ledger, 05/28/1896, p. 5.)

McIntosh was born in Australia c. 1857. His name appeared in Tacoma, WA, voter records in 1886 and 1888. He lived in Tacoma, WA, c. 1892.