Typed letter from Harry A. Peters to Charles F., Sr., thanking Brush for sending a copy of the address Brush gave on evidence supporting the kinetic t Show moreTyped letter from Harry A. Peters to Charles F., Sr., thanking Brush for sending a copy of the address Brush gave on evidence supporting the kinetic theory of gravitation at Franklin Institute Charles F. Brush, Sr., Papers Series 1: Correspondence Subseries 2: Acknowledgments (1921-1929) Box 3 Folder 6 Show less
