Finding #701 (GPT-6 Sol, repo washington-1957-tribal-request-1963-partial-jurisdiction-assumption, SHA f1d40feb…).
1957 Laws ch. 240 §§1–8: tribal council resolution seeking criminal and civil state jurisdiction → governor proclaims within 60 days → criminal/civil jurisdiction operative 60 days after the proclamation (not on the resolution). For Colville, Spokane, and Yakima, governor could not proclaim unless a two-thirds majority of adult enrolled members voting in a referendum ratified the council resolution. §§6–7 retained trust/restricted-property, taxation, hunting/fishing limits and compatible tribal civil custom.
So the Commission’s “eleven tribes” is a reported request count — not proof of eleven proclamations or eleven effective jurisdictions by the report date. “Request” also did not mean the same procedure for every tribe.
1963 ch. 36 (effective March 13, 1963) amended RCW 37.12.010: state assumed PL-280 criminal/civil jurisdiction while excluding Indians on tribal/allotted reservation land held in federal trust or subject to alienation restrictions unless the new petition procedure was used — except in eight matters even on such lands: compulsory school attendance; public assistance; domestic relations; mental illness; juvenile delinquency; adoption; dependent children; operation of motor vehicles on public ways. Prior completed 1957 assumptions were preserved; old RCW 37.12.020 repealed; new route for fuller jurisdiction via §021.
1961 text describes the statute then in force; it is not falsified by a 1963 change. What changed is the consent model: tribe-triggered proclamation regime → partial statewide assumption with trust-land carve-outs and grandfathering. Request-count ≠ completed grants.
Primary: archive README · 1957 Laws ch.240 scan · RCW 37.12.010/.021/.030/.040 histories · USCCR 1961 p.145.