8-1/2 x 11" (range 110-150 pages each) fraying on spines, edge/corner wear, April 1936 has chip in cover at bottom left, August 1937 issue has heavy crease on cover, but overall they are in good condition for their age. January 1936 & December 1937 are the other two dates. The color covers are all Edgar Franklin Wittmack artwork.