Typed letter signed in black ink on unlined paper with an embossed letterhead. Accompanied by air mail envelope with 3 three-cent Thomas Jefferson stamps, 1 one-cent George Washington stamp, and cancellations.
Albert Einstein was a German-born theoretical physicist who developed the theory of relativity, one of the two pillars of modern physics.
SCDIRB copy (barcode 39088020039145) is the gift of H.W. Lende, Jr. and has Lende accession number E-13.
SCDIRB copy has source: Sotheby's London, December 3, 1992.
SCDIRB copy is housed in an archival box together with other manuscripts from the H.W. Lende, Jr. Manuscript Collection, filed in Dibner accession number order.
Summary:
Letter to Mr. Mosel of Guayaquil, Ecuador, explaining the concept of relativity of simultaneity through a set of word problems, with typed illustrations.