July 20 Saturday – Webster & Co. Sent Sam ten Daily Report slips for July 15 to 20 [MTP].

July 20 Saturday ca. † – Sam sent Thornton’s July 19th letter to Franklin G. Whitmore:

Please mail my enclosed letter to him (read it,) & put in one of those heliotype pictures of me. SLC [MTP]. Note: Sam’s letter to Thornton is not extant.

In his Aug. 2 to Orion, Sam wrote of a day in Hartford,

I waited a day (July 20th) to see the machine perform under the new auspices [MTP].