Late 19th and early 20th century Ivy League Football programs were often in the shape of footballs as see in the Harvard-Yale 1913 program above, played at Soldiers Field.
The programs were often held together by twine or strong and end up being very fragile. The Princeton-Harvard 1895 program above is a rare example of a program found with the original string attached.
A more practical approach to a “football” on the cover is the Yale-Harvard program from 1897 above, which give the illusion of a football, but is in fact a conventional program.
The Penn-Cornell 1902 program is a rare football shaped program with a ‘portrait’ orientation.
Generally, football shaped programs sell for several hundred dollars and often more if the original string binding is still attached and the program is in excellent condition.