Biographical information; correspondence; printed materials including clippings, exhibition catalogs and announcements, articles in the HOUSTON REVIEW by Martin Dreyer, "The Way We Were: Houston's Culture in the 1940's" and "Portrait of a Houston Artist: An Interview with Margaret Webb Dreyer"; Dreyer Galleries file, 1962-1975; and personal photographs.
A resume; correspondence; a scrapbook containing clippings, exhibition catalogs and announcements, letters, and memorabilia, 1960-1965; awards and certificates; exhibition catalogs; Christmas cards and cards designed by Gantz; photographs of works of art; and printed material concerning painting classes taught by Gantz.
