We had an article about the Oliver 500 and 600 tractors in our March/April 2006 issue of the Collector. We still have copies of this back issue for sale. They are $7 each for 1 or 2 copies, and $6 each for orders of 3 or more copies/issues. 

If you'd like to order, send a check or money order made payable to [b:3k7ypb43]HPOCA[/b:3k7ypb43] and mail it to:

HPOCA Back Issues
c/o Becky Losey
11326 N. Parma Rd. 
Springport MI 49284

Be sure to include a note stating which issues and quantities you are ordering.

Beyond that,what kind of information are you looking for?