First separate printing of Einstein’s paper about the energy of gravitational fields, 1918

Albert EINSTEIN: DER ENERGIESATZ IN DER ALLGEMEINEN RELATIVITÄTSTHEORIE. [The Law of Energy Conservation in the General Theory of Relativity.] Sitzungsberichte der Königlich Preussischen Akademie der Wissenschaften, XXIV (1918). Sitzung der physikalisch-mathematischen Klasse am 16. Mai, p. 448-459. Berlin: Verlag der Königlichen Akademie der Wissenschaften (in commission at Georg Reimer [Reichsdruckerei]), 30th May 1918.

Imperial 8vo (26,5:19 cm). 11 pages, numbered 448-459. Letterpress on machine paper, in original publisher’s brochure on orange-coloured stock with black title printing.

First separate printing in the original printed wrappers, of Einstein's paper about the energy of gravitational fields.

Edition: The Academy's publishing list on the rear cover also announces an offprint of this paper for Reichsmark 0,50. - Condition: Some pages crease due to handling and reading, otherwise fine copy.

Rarity: ABPC (1973ff.) and APO (1988ff.) record only 1 copy of this edition at auction (2011).

Reference: Boni-Russ-L. 109; Collected Papers, vol. 7, 9; Schilpp-Shields 121; Weil 99.