Original members of the Committee included Shirley Nootbaar, Greg Piatt, Chappell Holt, Margory Lee, Ardyce Felix and Peg Steunenberg. Guidelines for exhibits were established by the committee and Warren Dreher, the-then Curator of the Bedford Gallery (established in the Dean Lesher Regional Center for the Arts in Walnut Creek)assisted in establishing criteria for installing exhibits.

The first exhibit consisted of 35 pieces and was displayed during the Gala Evening prior to the Summit Museum Dedication on October 16, 1993 at Diablo Country Club. The show was dismantled immediately following the Gala and twelve, previously-selected artworks were transported early on the morning of the Dedication to the summit for display in the allocated gallery space in the museum.

This exhibit was entitled "Art and Advocacy in High Places". Based on Wallace Stegner’s philosophy of using art for promoting responsibility to our public lands, the show was diverse in content ranging from oils, watercolors, photography and acrylics to computer-generated and textile art. Diversity in styles and subject matter was demonstrated by broad-stroke landscapes, crisp images and illustrative technique. The exhibit was in place until Spring 1994. Original exhibitors included Jim Belhke, Peter Brown, Warren Dreher, Pam Glover, Peg Humphreys, Stephen Joseph, Marjory Lee, Liz Piatt, Greg Piatt, Shirley Nootbaar, Michael Sewell and Peg Steunenberg.

Titles and dates of exhibitions in the Summit Museum Gallery provided by Shirley Nootbaar, MDIA Board member and Art Committee Chair.

1993 Fall Art and Advocacy in High Places
1994 Spring Wild about Flowers
Summer Travelling the Trails
Fall Mountain Magic
1995 Winter Heavenly Skies
Spring Wings and Wonder
Summer Art on the Summit Rossmoor Art Association
Fall Focus on the Mountain Guild of Natural Science Illustrators
1996 Winter Rocks and Critters
Spring A Mountain of Flowers
Fall The Devil made me do it!
1997 Winter Mt Diablo, the Living Lab Roosevelt Junior High School pupils
Spring Birds of the Mountain Mt Diablo Audubon Society
Summer A Painter/A Photographer Greg Piatt & Stephen Joseph
Fall Dawn to Dusk - the nocturnal mode of the mountain
1998 (planned) Poetry and butterflies

Except as noted, exhibitions were open to all artists and entries were juried by the Art Committee. For a copy of the guidelines on how to have your work included in a Summit Museum Gallery show please call (510) 943-1945.