6 2 8 E I N S T E I N ’ S L E C T U R E A T K Y O T O U N I V E R S I T Y sources, both in correspondence and in manuscripts authored by Einstein and his contem- poraries. These documents enable us to make an independent reconstruction of the histori- cal development of general relativity and therefore also allow an independent assessment of Einstein’s later reflections.[10] [1]Einstein 1921d (Vol. 7, Doc. 53). There are two manuscripts that in all probability are earlier drafts for this paper (Vol. 7, Docs. 31 and 50). [2]See Vol. 12, Appendix D, p. 519. [3]See Abiko 2000, p. 3. [4]Kaizo, Vol. 5, no. 2 (February 1923): 1 English translation by Shigehisa Kuriyama as published in Miller 1987, p. 9. [5]Ishiwara 1923, pp. 131–133 English translation from Abiko 2000, pp. 12–13. [6]Ishiwara 1923, p. 151 English translation from Abiko 2000, p. 17. [7]For the various proposed translations of these two sentences, see Doc. 399, notes 4 and 5. [8]See Vol. 12, Appendix D, p. 519. For a historical discussion, see Dongen 2009. [9]Wertheimer 1945, chap. 7, pp. 168–188. [10]For a history of the genesis of general relativity, see Renn 2007.