This collection holds the contents of one notebook, with lists of Maybelle Blos' drawings of South American Cactaceae, done for Paul Clifford Huchison (1924–1997) and Myron Kimnach(1992–2018). Some notes are written by Blos herself, while others are records kept by her employer. There is also a letter written by Leonard Machlis (1915–1976), chairman of the University of California, Berkely botany department, to Thomas Harper Goodsped regarding research funding.