Scope and Contents The Yvonne Johnson Collection dates from 1874 to 2015, with materials dating predominately between 1930 and 2015, and includes personal and professional materials related to Yvonne Johnson’s fifty-one year career as a science teacher. The collection provides a snapshot into American education through the eyes of an admired and successful educator. Documents include family history information, photographs, correspodence with students, certificates, educational and instructional materials,...