Handwritten letter from Elinor Tasler to Charles F., Sr., thanking Brush for sending latest gravitation paper Charles F. Brush, Sr., Papers Series 1: Co Show moreHandwritten letter from Elinor Tasler to Charles F., Sr., thanking Brush for sending latest gravitation paper Charles F. Brush, Sr., Papers Series 1: Correspondence Subseries 2: Acknowledgments (1921-1929) Box 2 Folder 13 Show less
Typed letter from George O. Knapp’s secretary (possibly Laudeubuger) to Charles F., Sr., thanking Brush on behalf of Mr. Knapp for sending latest grav Show moreTyped letter from George O. Knapp’s secretary (possibly Laudeubuger) to Charles F., Sr., thanking Brush on behalf of Mr. Knapp for sending latest gravitation paper Charles F. Brush, Sr., Papers Series 1: Correspondence Subseries 2: Acknowledgments (1921-1929) Box 2 Folder 13 Show less