[3] The system debuted its bookmobile in September 1964, based in Centralia and traveling on ten routes between rural areas in all five counties.

[4][5] The formation of a permanent library district would require a public vote, which was pushed back from 1966 to 1968, waiting for a more favorable general election.

[14] The TRL proposed a similar building swap in 2023 to relocate the Amanda Park branch to Randle, 153 miles (246 km) to the east.

[15] The Amanda Park branch had served a small population with a severe decrease of book holds and physical checkouts since 2011, while Randle was due to receive a new building that would cost $1.8 million to construct.

[16] On February 3, 2009, approximately 53% of voters within TRL's five-county district turned down "Levy Lid Lift Proposition 1" in a special election.

[17] This proposition would have lifted the 34.5-cent (per thousand dollars of assessed valuation) cap on TRL's property tax levy rate.