Letter from Ellsworth Mason to Laura Jackson, 1973-08-22

"I was overwhelmed to learn in your telephone conversation that you had offered me your list of modifications as a gift, since I had presumed that you were offering me the "presentation" to buy for my collection."

....

"They repose in the vault of our Rare Book Room, and you ay direct any scholar who inquires about them that they are already available for scholarly use."