| No. | Sender | Recipient | Preview | Date, oldest first |
|---|---|---|---|---|
| 1 | Robert E. Lee | C. H. Latrobe | Abstract: Written in Lexington to Mr. C. H. Latrobe thanking him for information covering the principles of science as applied to bridge construction. Discusses the services of Mr. Latrobe and asks... | Jan. 18, 1867 |