The Washington State League played the 1897 season as an independent baseball league, with unknown teams and standings.[1]
In 1910, the league reformed. The 1910 league was organized at a meeting in Hoquiam, Washington on March 6, 1910, as a six–team circuit with a 21–week schedule. It was approved to split the shares of tickets equally between the home and away teams, with ten percent of the ticket earnings given to the league for travel expenses.[2] Walter A. MacFarlane was elected league president and W. E. Campbell was elected vice president. During the 1910 season, the salary cap was limited to $850 per month.[3]
In July 1910, Montesano Farmers second baseman Otto Moore was struck on the head with a baseball pitched by Harold Cross. As a result, Moore fell into a coma.[4]
The league reduced to four teams in 1911 and 1912, folding during its final season. The Centralia Pets and Chehalis Farmers won championships in those seasons.[6] The league permanently folded on July 14, 1912.[7]