From the OHS PC Database, derived from A Guide to North American Organbuilders, by David H. Fox (Richmond, Va.: Organ Historical Society, 1991). —

Same person as Olaf Petersson. Born in Sweden, 1871; apprenticed with Marcussen firm of Aabenraa, Denmark; with Furtwaengler-Hammar of Hannover, Germany, 1891-92; with William Schuelke, Milwaukee, Wisconsin, 1893-97; changed his name after his grandmother in 1898; returned to Sweden ca. 1897 and was with Marcussen firm; began new firm in Goeteberg, Sweden, in 1898 and used Schuelke pneumatic system; died 1941.

Source:

• Richard Weber, "Sketches of Milwaukee Organbuilders, 1847--1902", The Tracker 34:1 (Richmond, Va.: Organ Historical Society, 1990), 24, 27.