Tony,

Here's the webpage where that picture originated from:
http://www.users.nwark.com/~rcmahq/jclark/ibm650.htm

Links back to the SOURCE: John R. Clark, Professor of Mathematics and Computer Information Systems
http://www.users.nwark.com/~rcmahq/jclark/lgp30.htm
http://www.users.nwark.com/~rcmahq/jclark/nsfayi.htm
http://www.users.nwark.com/~rcmahq/jclark/index.htm

Scott