- Series: Letters: Poul Anderson Series Record # 44303
- Letters: Poul Anderson
- Letter (Thrilling Wonder Stories, December 1947): Gripe and Snipes (1947) [ES] by Poul Anderson
- Letter (Famous Fantastic Mysteries, August 1949): Compliment to Lawrence (1949) [ES] by Poul Anderson
- Letter (Startling Stories, May 1950): Prone to Fallacy (1950) [ES] by Poul Anderson
- Letter (Astounding, February 1951) (1951) [ES] by Poul Anderson
- Letter (Thrilling Wonder Stories, April 1951) (1951) [ES] by Poul Anderson
- Letter (Thrilling Wonder Stories, December 1951) (1951) [ES] by Poul Anderson
- Letter (Startling Stories, February 1953) (1953) [ES] by Poul Anderson
- Letter (Astounding, April 1954) (1954) [ES] by Poul Anderson
- Letter (Astounding, September 1957) (1957) [ES] by Poul Anderson
- Letter (Analog, May 1961) (1961) [ES] by Poul Anderson
- Letter: On Paints and Peasants (1961) [ES] by Poul Anderson
- Letter (Trumpet #4) (1966) [ES] by Poul Anderson
- Letter (Analog, June 1966) (1966) [ES] by Poul Anderson
- Letter (Riverside Quarterly, March 1967) (1967) [ES] by Poul Anderson
- Letter (Riverside Quarterly, August 1969) (1969) [ES] by Poul Anderson
- Letter (Riverside Quarterly, January 1970) (1970) [ES] by Poul Anderson
- Letter: On Historic Heraldry (1970) [ES] by Poul Anderson
- Letter (The WSFA Journal #76, April-May 1971) (1971) [ES] by Poul Anderson and Pat Coyle and Kenneth W. Faig, Jr. and Dave Hulvey and Sandra Miesel
- Letter: On Menus (1971) [ES] by Poul Anderson
- Letter (SF Commentary 25) (1971) [ES] by Poul Anderson
- Letter (Foundation #3) (1973) [ES] by Poul Anderson
- Letter (Algol 20, May 1973) (1973) [ES] by Poul Anderson
- Letter (SF Commentary, 35/36/37) (1973) [ES] by Poul Anderson
- Letter (Analog, October 1973) (1973) [ES] by Poul Anderson
- Letter (The Alien Critic #7) (1973) [ES] by Poul Anderson
- Letter (Vector 67/68) (1974) [ES] by Poul Anderson
- Letter: On the Harpplaying Hero (1974) [ES] by Poul Anderson
- Letter (Foundation #7 and 8) (1975) [ES] by Poul Anderson
- Letter: On Mongols (1975) [ES] by Poul Anderson
- Letter (Science Fiction Review #13) (1975) [ES] by Poul Anderson
- Letter: Prince Rupert of the Rhine (1975) [ES] by Poul Anderson
- Letter (Riverside Quarterly, August 1975) (1975) [ES] by Poul Anderson
- Letter (The Diversifier #17) (1976) [ES] by Poul Anderson
- Letter (Science Fiction Review #27) (1978) [ES] by Poul Anderson
- Letter (Science Fiction Review #30) (1979) [ES] by Poul Anderson
- Letter (Science Fiction Review #32) (1979) [ES] by Poul Anderson
- Letter (Analog, April 1980) (1980) [ES] by Poul Anderson
- Letter (Analog, June 1980) (1980) [ES] by Poul Anderson
- Letter: On Heroic Geography (1981) [ES] by Poul Anderson
- Letter (Science Fiction Review #40) (1981) [ES] by Poul Anderson
- Letter (Science Fiction Review #43) (1982) [ES] by Poul Anderson
- Letter (Science Fiction Review #45) (1982) [ES] by Poul Anderson
- Letter (Asimov's, February 1984) (1984) [ES] by Poul Anderson
- Letter (Science Fiction Review #51) (1984) [ES] by Poul Anderson
- Letter (Science Fiction Review #59) (1986) [ES] by Poul Anderson
- Letter (Locus #307) (1986) [ES] by Poul Anderson
- Letter (Locus #327) (1988) [ES] by Poul Anderson
- Letter (Aboriginal, July-August 1989) (1989) [ES] by Poul Anderson
- Letter (Analog, November 1990) (1990) [ES] by Poul Anderson
- Letter (Locus #392) (1993) [ES] by Poul Anderson
- Letter (Analog, November 1996) (1996) [ES] by Poul Anderson
- Letter (Analog, March 1998) (1998) [ES] by Poul Anderson