Not sure about the Wenatchee, WA but my husband's grandfather, grandmother and baby (his mother) went to Alaska to work at Kennecott Copper Mine in about 1918.
The ancestor is Harry Franklin Hinman, married to Alta Mae Crall. Their child is Volita Gaye Hinman, mother to Larry Kemp Mattingly.
I have Harry F. Hinman's parents as Franklin W. Hinman and Lola Richards. Harry was b. May 1879 in Janesville, Wisconsin.His father Franklin W. Hinman was b. abt 1852 in New York, Lola Richards b. abt 1853 in Neenah, WI.They also had another son, Walter Hinman b. abt 1882 in Minnesota.
I know Harry & Alta lived in Washington and Oregon before going to Alaska.Volita Gaye was born in Mansfield (now Coos Bay), OR.