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
Typed letter from Roger Perkins to Charles F., Sr., detailing trip through Europe with Charles B. Perkins, listing various stops and languages picked Show moreTyped letter from Roger Perkins to Charles F., Sr., detailing trip through Europe with Charles B. Perkins, listing various stops and languages picked up, plans for immediate future, and thanking Charles, Sr., for Christmas money and describing purchases using said money Charles F. Brush, Sr., Papers Series 1: Correspondence Subseries 1: Family and Personal (1889-1929) Box 1 Folder 9 Show less