1900 US Census, Illinois
- Illinois, Cook County, Roll 267 Book 2, Page 295, Image 370/445
- Enumeration District 546, Sheet 18A, Line 10-15, Image 35/41
- 167 Milwaukee Avenue, Chicago, Cook County, Illinois, USA
- Otto Olson, head, b. February 1858, Immigrated 1877, Barber
- Hannah Olson, wife, b. February 1864, Immigrated 1880
- Tille Olson, daughter, b. July 1885
- Harry Olson, son, b. July 1887
- Mabel Olson, daughter, b. June 1890
- Norman Olson, son, b. August 1895
- Otto Olson (1858-1921)
- Hannah E. Hansen (1864-1936)
- Tille Olson (1885-1918) b. July 1885; d. 1918, Influenza
- Harry Oliver Olson (1887-1964) b. July 27, 1887 - d. January 06, 1965
- Mabel Olson (1890-1972) b. June 25, 1890 - d. August 15, 1971
- Norman Otto Olson (1895-1977) b. August 29, 1895 - d. March 1977