The Frank G. Dennis papers consist of articles and biographical information about, and awards given to Frank G. Dennis, Stanley Johnston, and Sylvan Wittwer who were members of the Horticulture Department at Michigan State University (MSU). There is also information regarding the history of horticulture at MSU. Records include materials about Sylvan Wittwer used by Dennis to write his book and a copy of the poem “Ode to Cyclone” written by Dennis. The collection also includes a number of interviews conducted by Frank Dennis. Those interviewed include Harold Tukey, Robert Herner, Carter Harrison, Lowell Ewart, and Walter Toenjes.

The collection also includes audio recordings of interviews of Liberty Hyde Bailey. The recordings were made 1951–1952 and the interviewer was George Lawrence. The original recordings are at Cornell University and they collaborated with the MSU Museum to make copies. There are also notes about the history of the tapes and a transcript of the interviews. These interviews are also at the Vincent Voice Library on the MSU campus. Interested researchers should contact the Vincent Voice Library first for access.

Also included is the book "Growing Up During the Great Depression and My Life Thereafter" (2009) by William Collingwood Johnston, son of Stanley Johnston. It includes chapters about the South Haven Experiment Station and Stanley Johnston, the Experiment Station's superintendent.