1. Potrero #22 Artist: Henderson, Mel Classification: Sculpture Materials: bronze Dimensions: 14 x 6 x 6 in. Accession Number: 1974.40
2. Letter to Tom Marioni from Mel Henderson (The Return of Abstract Expressionism) Artist: Henderson, Mel Classification: Work on paper Materials: blue ink on postcard, two-hole punched, two-sided Dimensions: 5 1/2 x 3 1/4 in. Accession Number: 1995.46.150.29
3. Sherrif's Office, Orange County, Case No. 354-924 (The San Francisco Performance) Artist: Henderson, Mel; Kos, Paul Classification: Work on paper Materials: typewritten text, black and blue ink, graphite, and black and green marker on paper, thirteen pages Dimensions: sheet a–j: 11 x 8 1/2 in. (each) Accession Number: 1995.46.439.45.a-m
4. Letter to Tom Marioni from Mel Henderson (Bay Area Roach Clip Show) Artist: Henderson, Mel Classification: Work on paper Materials: red marker on San Francisco State College stationery, two-sided Dimensions: Sheet: 5 1/2 x 8 1/2 in. Accession Number: 1995.46.441.12
5. Letter to Tom Marioni from Mel Henderson (Bay Area Roach Clip Show) Artist: Henderson, Mel Classification: Work on paper Materials: a: Blue ink on San Francisco State College stationery, two-sided b: Blue ink on envelope Dimensions: Sheet: 11 x 8 1/2 in. Accession Number: 1995.46.441.11.a-b
6. untitled photograph, Attica (The San Francsico Performance) Artist: Henderson, Mel Classification: Photograph Materials: black-and-white photograph, three copies Dimensions: 8 x 10 in. Accession Number: 1995.46.443.2
7. untitled photograph, Attica (The San Francsico Performance) Artist: Henderson, Mel Classification: Photograph Materials: black-and-white photograph Dimensions: 8 x 10 in. Accession Number: 1995.46.443.3
8. Attica, the arrest, from "The Trip" (The San Francisco Performance) Artist: Henderson, Mel; Marioni, Tom; Fox, Larry Classification: Photograph Materials: black-and-white photograph Dimensions: 4 1/2 x 6 1/2 in. Accession Number: 1995.46.443.127
9. Attica, the arrest, from "The Trip" (The San Francisco Performance) Artist: Henderson, Mel; Marioni, Tom; Fox, Larry Classification: Photograph Materials: black-and-white photograph, three copies Dimensions: copy 1: 4 3/8 x 6 1/2 in. Accession Number: 1995.46.443.129
10. Attica, the arrest, from "The Trip" (The San Francisco Performance) Artist: Henderson, Mel; Marioni, Tom; Fox, Larry Classification: Photograph Materials: black-and-white photograph, three copies Dimensions: copy 1 2: 4 7/16 x 6 1/2 in. (each) Accession Number: 1995.46.443.130