1875-1890 – Andrew W. Piper had a store in downtown Seattle. A park area in Seattle that was his homestead now exists. He is listed as Andrew in the WA Death Index, having died in 1904 which matches other information. [Research by Russell Miller.]

1932 – According to "History of Washington Chess" by John Nourse (Aug. 1950), "There was no Washington State Tournament in existence until 1932." (Presumably match play before then.) See the above-referenced 1934 tournament booklet for more information.

1944 - A recently discovered article in the 30 Jan 1944 Seattle Daily Times states that "Leonard Sheets, defending titlest and Richard Dightman via this afternoon as the annual state championships get underway at the Seattle Chess Club, 408 Marion Street. The first player winning five games will take this match."

1952 – Score of 7.5 out of 9 included a playoff game.

1961 – Vik Pupols won the tourney on a tie-break.

1964 – Vik Pupols won the tourney in 1964, but Gerald Ronning took title in a match.

1968 – Score includes playoff win by James H. McCormick over Robert Holzinger.

1969 – Score includes playoff win by James H. McCormick over Kent Pullen.

1976 – Tournament was held in February. The following players tied: Vik Pupols, Ray Fasano, Yasser Seirawan. The playoffs were to be March 30-April 13 per article in April NWC by the TD Robert Karch. May NWC has short article about the playoff results. Seirawan won the playoff 3-1. Pupols was 2.5-1.5 and Ray 0.5-3.5.

1978 – Pupols-Tangborn playoff match ended in 2-2 score.

1985 – Event started with eight players, however Ken Tomkins did not finish 50% of his games.