The 1915 Avery catalog states that the "Yellow Fellow" will thresh satisfactorily 18 different grains and seeds, and could be fitted with hand feeder, or self feeder, and common stacker, wind stacker, or Satterly swinging stacker.  They were built in sizes 28"x42" to 42"x70".  A smaller machine 22"x36" was called the "yellow kid".