An exhibition celebrating the St. Louis Mercantile Library’s 175th anniversary opens on Friday at the University of Missouri–St. Louis.

An exhibition celebrating the St. Louis Mercantile Library’s 175th anniversary opens on Friday at the University of Missouri–St. Louis.
An exhibition celebrating the St. Louis Mercantile Library’s 175th anniversary opens on Friday at the University of Missouri–St. Louis.
An exhibition celebrating the St. Louis Mercantile Library’s 175th anniversary opens on Friday at the University of Missouri–St. Louis.
Walker studies Poecilia mexicana, a species of live-bearing fish that have adapted to surviving in hydrogen sulfide-abundant waters, in the Tobler Lab.