[ New York ]: [ The Columbia Broadcasting System ] 1946. First Edition. 8 leaves + wrappers + foldout of black and white vs color illustration. 8 1/2 x 11 inches. Buff wraps printed in red and black. Slip paperclipped to front wrapper "Everyone interested in the future of television (and who isn't?) will, I think, find the accompanying statement the most important yet made. George Crandall Director of Press Information COLUMBIA BROADCASTING SYSTEM". Enclosure contains photographs in B&W and the same using the CBS color television system, both in half-tone reproduction (so noted internally). [ Color Television - the way ahead ] printed on the front wrapper. Very Good. Wraps. 
Black and white television was broadcast in the lower frequencies starting in 1941. This presentation by Stanton laid out CBS's reasons for wanting color television in the ulta-high frequency (UHF) bands, a frequency area that war-time research had opened up. His presentation lays out the massive experimentation both technically and with focus groups. And that CBS had invested significantly in engineering resources. Their pitch includes a nation-wide competitive color system, improvements from (ghostly) black and white TV and man-made static, and a multitude of viewer benefits. By the time this public hearing was conducted, CBS had developed and proved out a working system in the laboratory. This was part of the presentation at a public FCC hearing to help encourage it's adoption. As with most new technical solutions that would have a significant impact, color television took years to be approved and for regulations to be adopted. Broadcasts weren't actually conducted until 1950 (partly because televisions needed to be able to receive them!), and then only demonstrated in one broadcast area to publically viewable special receivers. This document predates that by over four years, an eon in technology development terms.
"In the immediate post-war era the Federal Communications Commission (FCC) was inundated with requests to set up new television stations. Worrying about congestion of the limited number of channels available, the FCC put a moratorium on all new licenses in 1948 while considering the problem. A solution was immediately forthcoming; rapid development of radio receiver electronics during the war had opened a wide band of higher frequencies to practical use, and the FCC set aside a large section of these new UHF bands for television broadcast. At the time, black and white television broadcasting was still in its infancy in the U.S., and the FCC started to look at ways of using this newly available bandwidth for color broadcasts. Since no existing television would be able to tune in these stations, they were free to pick an incompatible system and allow the older VHF channels to die off over time." wiki
No copies in OCLC/Worldcat as of this writing. Not in Shiers (which covers this period sparsely). Cradle period for color television, and the first example we've seen.