1-01: Correspondence between Peacock and author Ramon F. Adams, 1963-1970. 18 leaves.

1-02: Correspondence between Peacock and Steve Goldstein and Peacock and Debbie Coor. 1977. 6 leaves.

1-03: Correspondence between Peacock and Obie B. Faulk, 1973. 2 leaves.

1-04: Correspondence between Peacock and Rep. O.C. Fisher. 1968. 2 leaves.

1-05: Correspondence between Peacock and Earle R. Forrest. 1964-1965. 5 leaves.

1-06: Correspondence between Peacock and descendants of Pat Garrett. 1964. 8 leaves.

1-07: Correspondence between Peacock and Gene Gressley. 1975. 4 leaves.

1-08: Correspondence between Peacock and Leon C. Metz. 1967-1970. 10 leaves.

1-09: Correspondence between Peacock and a variety of individuals (Sonnichsen, Rosa, et al.) regarding the Murrell family. 1972. 7 leaves.

1-10: Correspondence between Peacock and Edward Knowles. 1967-1969. 7 leaves.

1-11: Correspondence between Peacock and Colin Rickards. 1968. 1 leaf.

1-12: Correspondence between Peacock and Joseph G. Rosa. 1964-1976. 192 leaves, including some original drawings.

1-13: Correspondence between Peacock and Orland L. Sims. 1964-1968. 9 leaves.

1-14: Correspondence between Peacock and William Fielding Smith. 1965. 1 leaf.

1-15: Correspondence between Peacock and C.L. Sonnichsen. 1964-1970. 35 leaves, including a copy of “The American Morality Play”

1-16: Correspondence between Peacock and Floyd L. Temple. 1974. 5 leaves plus 11-page typescript by Temple “Double Bank Robbery at Stroud, Oklahoma, March 27th, 1915”

1-17: Gunfighter books, list, plus miscellaneous correspondence about acquiring books and magazines.

1-18: Gunfighters miscellaneous. 4 leaves. 1968-1970, including a letter from Ramon Adams. 4 leaves.

1-19: Westerners, Los Angeles, and Houston. Miscellaneous correspondence and membership list. 1972-1977.

1-20: Westerners, Kansas City. Miscellaneous correspondence. 1966-1974. 6 leaves.

1-21: English Westerners Society. 1966-1971. 12 leaves.

The William Peacock Jr. collection comprises of two sections: the first is includes correspondence about gunfighters, exchanged between Peacock and various authors and other aficionados. The second contains correspondence about the Westerners International and specifically the Houston Corral in the 1970s.