All are c. mid-late 1920s soft covers, each approximately 9x12” w/page count ranging from eight to 32 pages. Two w/more extensive contents include: double page w/stars photos including Sally Rand, Mae Busch, Al St. John, Jason Robards. Stars promoted in ads include Reed Howes and Billy West. Other two promote “Six Superior Melodramas” and "Short Subjects”. Three books have moderate to heavy cover dust soil and edge wear. Overall Good. 1928-1929 “Box Office Twenty” book has Fine covers w/Exc. contents. Nice graphics throughout. Extremely limited distribution, just sent to theater owners and those in the trade.