Mathematical calculations written by Albert Einstein on a 6.25 x 8 off-white sheet of Hamburg-Amerika Linie stationary. Einstein pens five equations on the top half of sheet, with another five lines of smaller equations and several words. Sheet is affixed to an 8 x 11 sheet. In fine condition, with small tear to lower portion, affecting nothing, a bisecting horizontal fold and a few light creases. COA John Reznikoff/PSA/DNA and R&R COA.
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