1883, UX7 postal card from Texas to France, requesting information on an antique slide rule mfg by Gravet Lenoir sometime between 1827 & 1867, accompanied by computer printout with an illus of the slide rule and its discovery, a great bit of history in pre-computer era (Image)

Est. 30

1890, small cover posted from New Haven, Vt, Oct 17, to New York, readdressed twice, then written in pencil 'Not Found', blue oval Oct 28 'Adv' h/s and purple circled "BL" N.Y., 1¢ postage due (J15) added, no return address, so where did this cover go next?, on back are six N.Y. cds's incl H 10-18-90 , F 10-17-90, F 10-20-90 & H 11-12-90 (Image)

Est. 35

1937, American Consular Service airmail cover to Sec of State, Washington, DC, from Calcutta, India, from the F D Roosevelt collection, endorsed twice on back (Image)

Est. 25