JF Ptak Science Books Post 2379
I uncovered a somewhat found-again-lost-again paper in the collection here, an unusual small-distribution version of a great paper in the history of the search for extraterrestrial intelligence. The work is by N.R. Schwartz and Charles Townes, "Interstellar and Interplanetary Communication by Optical Masers", which appeared in the journal Nature for April 15, 1961 (volume 190, pp 205-208), and I have seen it referenced here and there as a started-it-all sort of paper as the first applied and elaborated scientific effort "to communicate with other intelligent life [which] might exist on neighboring planetary systems". That is to say it is a more involved approach to detection than the two earlier and perhaps more-famous papers by G. Cocconi and P. Morrison, "Searching for interstellar communications" (a short paper published in Nature, volume 184, No. 4690, pp. 844-845, September 19,1959) and F. Drake's "How can we detect radio transmissions from distant planetary systems?", published in Sky and Telescope (volume 19, No. 3, pp. 140-143, January 1960).
The present copy is an offset, stapled affair sent to the editor of Physics Today; it has the annotation "Mr. Katcher" in a secretarial hand at top, that being David Katcher, the founding editor-in-chief. This is a pre-printed version, and is dated more than a month before the article's publication, and is dated February 27, 1961.
Both Schwartz and Townes were at the Institute for Defense Analysis in DC at the time of publication, Townes being the Director of Research; later in 1961 Townes would become Provost and professor of physics at MIT. In addition to the Nobel Prize in physics, Townes was awarded the Templeton Prize (in the understanding of religion and science).
The full text as it appears in six pages in Nature appears here at Coseti; it is obviously a different format from the 14-page variety that I have here, and has a few minor changes, though for all intents and purposes the text is the same.
The Cocconi/Morrison paper is located in full text here at Coseti.
Also just for the sake of it, the Drake equation (1961) for determining the number of extraterrestrial civilizations, here, again at Coseti.