Although Bert and family lived in Sawyer County during the 1920 census, they were a Pierce County family. I suggest you contact a Piece County list for assistance.
A search of Pierce County records online:
Berty Beardsley married Daisy Watson Nov. 23, 1898
"Daisey" Agnes Beardsley died June 30, 1917
Spring Lake Cemetery: Beardsley Bert (1877-1939), Daisy (1879-1917), and Glen E. (Oct. 20, 1902-June 16, 1966).