Herbert Seidman vs Isaac Kashdan
USA-ch New York, NY USA round 3 1942.04.12
Bishop’s Opening: Urusov Gambit 0-1

Arthur Bisguier vs Herbert Seidman
47th US Open Pittsburgh, PA USA round 4 1946.07.17
English Opening: Four Knights System, Nimzowitsch Variation 0-1

Arnold Denker vs Herbert Seidman
USA-ch New York, NY USA round 1 1959.12.18
Grünfeld Defense: Exchange Variation 0-1

Herbert Seidman vs Bernard Zuckerman
USA-ch New York, NY USA round 11 1968.07.??
Sicilian Defense: Accelerated Dragon 0-1

Herbert Seidman vs George Shainswit
Third Rosenwald Trophy New York, NY USA round 2 1956.10.08
French Defense: Exchange Variation 1-0

Herbert Seidman vs Weaver Warren Adams
Ventnor City Ventnor City, NJ USA round 3 1940.07.07
Ruy Lopez: Closed 1/2-1/2

Israel Albert Horowitz vs Herbert Seidman
USA-ch New York, NY USA round 4 1942.04.14
Alekhine Defense 1-0

Herbert Seidman vs Samuel Reshevsky
USA-ch New York, NY USA round 5 1960.12.23
Sicilian Defense: Accelerated Dragon 1/2-1/2

Viacheslav Ragozin vs Herbert Seidman
USSR - USA Radio Match Moscow RUS and New York USA round 1.8 1945.09.01
Nimzo-Indian Defense: Fischer Variation 1-0

Herbert Seidman vs Karl Burger
USA-ch New York, NY USA round 10 1954.06.08
Sicilian Defense: Closed 1-0