[Photo.]

First photo of the letter of August 30, 1721, with which Czar Peter the Great expressed his thanks for the nomination as "Associé Etranger hors de tout rang" of the French Academy of Science on 22 December, 1917. Transcription on the back.

[Photo.]

First photo of the letter of August 30, 1721, with which Czar Peter the Great expressed his thanks for the nomination as "Associé Etranger hors de tout rang" of the French Academy of Science on 22 December, 1917. Transcription on the back.