The size is S. Written on the front is "THE COMPUTER MUSEUM, BOSTON, MA, THE WALK-THRU COMPUTER", "BIG AS A HOUSE". There is a unreadable name and a copyright date. The front has an isometric drawing of the Walk-Thru computer with numbers descriptions of items. On the back reads "I WALKED THROUGH THE WALK-THRU COMPUTER, THE COMPUTER MUSEUM, DOWNTAIN BOSTON ON MUSEUM WARF".