Mary Lou CookMMary Lou CookQueuebrick VideoOverviewDiscussionMary Lou CookActingRateNA/10 avgNo member ratings yetRateOverviewDiscussionFilmography3Seen0Favorites0FilmCreditRide 'Em Cowboy1942 · Dotty DavisDotty DavisMelody Lane1941 · Rhythmeer MemberRhythmeer MemberA Night at Earl Carroll's1940 · The Hot SingerThe Hot Singer