Philadelphia: Hanley & Belfus, (1990). First edition. Mencken's brief foray into pediatrics resulted from Theodore Dreiser's request for articles for The Delineator magazine. Those articles were collected in the 1910 book, WHAT YOU OUT TO KNOW ABOUT YOUR BABY, "by" Leonard Keene Hirshberg, M.D., whose only contributions, according to Markel and Oski, were the "questions and answers" portions added to each chapter -- and to whom the men refer as a "physician turned scoundrel." Markel and Oski's "commentaries" correct and bring up to date the information in the original text. INSCRIBED BY MARKEL 3/3/90 on title page beneath his printed name (which he has struck through), "For Aunt Doris with love, Howard." Fine in near fine dust jacket with spine toned to blue and touch of lightly rubbed creasing at head of spine.