(EINSTEIN) "Special Number: Relativity". In Nature, volume 10, pp 781-820, with the Einstein on pp 782-784. Nice copy, removed from a larger bound volume, with the scarce front wrapper (with the rubber stamp of the Smithsonian Institution/Astrophysical Observatory). $350
I bumped in this issue of Nature (volume 106, pp782–784) this evening, and as it turns out it is the "Special Number: Relativity" and published February 17, 1921--and it is packed. Somehow when I first looked at this weekly I mega-missed the Einstein entry--as is customary I work back-to-front, bottom-to-top (don't ask) and was so taken by the collection of Big Names that Einstein's escaped me. Einstein's article is longish for this journal and concise, with numerous references in the influencing forces in his development of the theory of relativity (which he capitalizes).
The table of contents for this single week--though it is (roughly) a double issue of thirty pages or so--incoudes work by Cunningham, Frank Dyson, James Jeans, H.A. Lorentz, Oliver Lodge, Herman Weyl, A.S. Eddington, Norman Campbell, and Harold Jeffreys, plus a few pages of tight bibliography.