This research analyzed the most widely used foundations of education textbooks for lesbian, gay, bisexual, and transgender (LGBT) content. Because foundations of education coursework routinely introduces other diversity topics in education, the authors hold it is a good place to introduce LGBT topics. The ways in which LGBT topics are included in textbooks, however, or placed in relation to other material, can reinforce negative stereotypes and marginalize LGBT people. The authors paid particular attention to the textbook's presentation of LGBT topics in the following categories: discrimination and harassment against LGBT people; LGBT identities and experiences; LGBT parents, guardians, and families; LGBT history; strategies, resources, and curricula to increase safety and support; legal issues and professional responsibilities; personal beliefs and opposition; and conceptual terms and frameworks. (Contains 2 tables.)