13-3/4 x 10-1/2" (opens up to double size) ... February 1948 to January 1949 ... each month has an artwork, two months were torn out but still intact .... It was produced by The Brown Instrument Company based in Philadelphia, Pennsylvania (Was a division of the Minneapolis-Honeywell Regulator Co. - now universally known as Honeywell) ... "A little nonsense now and then, is relished by the wisest men." ... The distinctive, chaotic cartoon illustrations were created by the famous naval officer, engineer, and artist William Crawford "Bill" Eddy. Starting in the late 1930s and continuing for decades, Honeywell commissioned Bill Eddy to design these popular promotional calendars... code Jsb 340 Info from Wikipedia -- William Crawford Eddy (August 22, 1902 – September 15, 1989) might best be described as a 20th-century Renaissance man. Naval officer, submariner, engineer, television producer, educator, cartoonist, artist, inventor, entrepreneur, explorer, writer – all of these characterizations and more could justifiably be applied to him, and he was successful in all of them. Bill Eddy was born and raised in Saratoga Springs, New York, where his father was a successful businessman and four-term mayor. He completed high school at the New York Military Academy, then received an appointment to the United States Naval Academy. With minimal hearing capability, he passed the physical examination by "reading lips," then kept this deficiency hidden throughout his years at the academy and during his initial military service