Cambridge, Massachusetts: Polaroid Corporation 1973-1974. First Edition. We offer three items from the SX-70 internal Polaroid press release memorandum plus an additional item from the following year.
1. Reproduced memorandum. Internal Polaroid Corporation Memo dated September 25, 1973. 8 1/2 by 11 inches. Minor overall wear darkening/variation.
Announces the pending launch of national advertising for the SX-70, noting enclosed issue of the October issue of Scientific American (missing here), a 12 page insert (present), and television commercials with Laurence Olivier.
"Our national advertising for the SX-70 system is about to begin"... "Watch it happen."
2. Pamphlet. "Polaroid's SX-70 advertising begins."  pages. 8 1/2 x 11 inches. Stapled wrappers. Creased, spotting. "F5293F Polaroid" on rear. Undated.
Presents a miniaturized version of the magazine advertising insert, the two page newspaper spread, and screen shots of the television commercial.
3. Pamphlet. "The way back."  pages. Stapled wrappers. 8 3/8 x 11 3/8 inches. Soiling to the extremities. Undated.
An example of the full size magazine insert. Includes large format images of the SX-70 (folded and open), several images showing the image "blooming before your eyes", some descriptions of the overall technical approach, and images of photographs taken with the camera.
4. Pamphlet. "The SX-70 Experience" Stapled wrappers. 8 1/4 x 9 1/2 inches.  +  pages of reproduced images. Soiling to wrappers. Introduction by Edwin Land dated March 25th, 1974.
While issued after the initial press release, it highlights the success of the product launch. A nice addition. Very Good. Wraps. 
Now almost fifty years ago, the introduction of the SX-70 and it's instant photography changed the way the public viewed photography. Rather than being a take an image, finish the roll, hope it is developed well, and printed properly before the photographer even saw some feedback on his/her work, the photographer was rewarded with an instant (and wonderous) image that developed before their eyes. An important development in photography, and a permanent part of social culture from that time period.
Scarce institutionally, with only the SX-70 Experience represented (eight institutions as of this writing).