Original drawings of chromosomes labeled "fig. 8 sc 9" and handwritten notes on the "Arrangement of loci in normal X-chromosome and in that containg scute-8 inversion" by Herman J. Muller
Evolution by Mutation John Willard Gibbs Lecture, 1958 [partially handwritten, partially carbon copy of typed manuscript thrown out by Hermann J. Muller but salvaged by Elof Carlson]. Includes handwritten notes in carbon copy as well as handwritten…
Form letter from H.J. Muller to Elof Carlson with photocopied signature but typed introductory salutation "Elof:" regarding the teaching of evolution in schools.