Typed letter from Myron Herrick to Charles F., Sr., thanking Brush for sending latest gravitation paper despite Herrick’s likely inability to comprehe Show moreTyped letter from Myron Herrick to Charles F., Sr., thanking Brush for sending latest gravitation paper despite Herrick’s likely inability to comprehend it, and praising Brush’s integrity Charles F. Brush, Sr., Papers Series 1: Correspondence Subseries 2: Acknowledgments (1921-1929) Box 2 Folder 14 Show less