1To Thomas Jefferson from Francis Eppes, 23 June 1826 (Jefferson Papers)
Knowing that all of your pavilions at the university have tin coverings, I write to learn whether they have ever leaked, and if so what method of prevention has been used. our roof here was perfectly close until about mid winter. it then began to leak not in one but a hundred places: and from that time I have endeavoured to discover the cause without effect. For some time I thought that the...