Nineteenth issue of the Mattachine Review, published by the Mattachine Society, Inc. in December 1956, marking the completion of its second year. This 27-page periodical addresses topics related to homosexuality and human sex behavior, including articles on masturbation, transvestism, morality and homosexuality, sex crime problems, and societal perspectives. The issue features a prominent cover story, 'Can Homosexuals Formulate An Acceptable Moral Code?', and includes panel discussions, personal narratives, legal commentary, book reviews, letters from readers, and information on Mattachine Society projects and libraries. The publication presents a mix of scholarly articles, empirical studies, and community news, with contributions from named authors such as Albert Ellis, Janet Thompson, Robert Kirk, Ross Puryear, and others. Printed in black and white, the magazine is aimed at an adult audience seeking informed discussion on sex variation and social integration.