Erik Delwin Osbun vs William G Addison
62nd US Open San Francisco, CA USA round 6.5 1961.08.20
Sicilian Defense: Richter-Rauzer Variation, Classical Variation 1/2-1/2

William G Addison vs Raymond Martin
56th US Open Long Beach, CA USA round 9 1955.08.16
English Opening: Anglo-Indian Defense 1/2-1/2

Donald Byrne vs William G Addison
USA-ch / Zonal New York, NY USA round 8 1969.12.11
Réti Opening: Anglo-Slav Variation, Bled Variation 1-0

Robert James Fischer vs William G Addison
US Championship New York, NY USA round 8 1966.12.21
Ruy Lopez: Morphy Defense, Tartakower Variation 1/2-1/2

William G Addison vs Anatoly Karpov
Caracas Caracas VEN round 17 1970.07.11
Russian Game 1/2-1/2

Wade Hendricks vs William G Addison
62nd US Open San Francisco, CA USA round 2.7 1961.08.15
Sicilian Defense: Closed, Anti-Sveshnikov Variation, Kharlov-Kramnik Line 0-1

Tibor Weinberger vs William G Addison
California Ch San Francisco 1960.??.??
Sicilian Defense: Boleslavsky Variation 1/2-1/2

Robert James Fischer vs William G Addison
58th US Open Cleveland, OH USA round 11 1957.08.15
Caro-Kann Defense 1-0

William G Addison vs Anthony Saidy
58th US Open Cleveland, OH USA round 10 1957.08.14
Benoni Defense: Fianchetto Variation 1/2-1/2

Herman Steiner vs William G Addison
CA State Champ. Los Angeles, CA round 5 1955.11.25
Queen’s Gambit Declined: Alekhine Variation 1/2-1/2