Gustav A. Hanssen (November 22, 1869 - January 4, 1944) was an American architect. He designed private residences in Davenport, Iowa[1][2][3] and later moved to San Diego, California.[4][5] Several of his buildings are listed on the National Register of Historic Places (NRHP).
^"In General". The Daily Times. Davenport, Iowa. May 2, 1892. p. 4. Retrieved January 25, 2019 – via Newspapers.com.