A new exhibition at the GLBT History Museum will feature the work of cartoonist Fran Frisch as a starting point for exploring the history of the bear community, a subculture that developed in the 1980s to celebrate older, larger, hairier, ruggedly masculine gay men who had been largely excluded from standards of attractiveness in gay popular culture. “Beartoonist of San Francisco: Sketching an Emerging Subculture” opens Jan. 27.