The first B-52’s album that I bought was a Cosmic Thing cassette. I sent a letter to a fan club whose postal address was listed in the cassette sleeve, and I got an issue of a fan club newsletter as well as the photo shown above.
The signatures are printed on the photo (not handwritten) and the photo’s size is 4 inches by 5.25 inches. I can’t seem to find this picture on the internet, but the closest photo I could find is one without the signatures. The photo seems to be part of six photos included in a Cosmic Thing press kit released on June 27, 1989. The photograph is by Janette Beckman and has a 1989 copyright belonging to Reprise Records. Note that the fifth member of the band, Ricky Wilson, passed away in 1985.