1. Charles Reid Barnes;Anonymous;Botanical Gazette,1910
2. Commemorating six decades of the modern era in botanical science, November 15 and 16, 1934. Department of Botany Cooperating with the Corn Research Institute of the Iowa Agricultural Experiment Station;Anonymous;Iowa State College of Agriculture and Mechanic Arts, Official Publication,1934
3. Beal Centennial 1873-1973;Anonymous;Michigan Science in Action,1973