Classic/Antique Car Repair: Replacement wheels, hemmings motor news, chrysler product

Question
I have a small homemade utility trailer.  The wheels have a 5 hole x 5 inch bolt pattern.  The tires are 600 x 16.  I would like to get new wheels to be able to put newer tires on the trailer.  I have been unable to find any vehicle that had that particular bolt pattern.  Can you halp me?  (PS - the axle has a left thread wheel.)

Answer
My stock answer for “where can I find….” Is to latch on to a copy of Hemmings Motor News, the old car hobbies classified bible. There are many companies that supply parts for old cars and you will find them in Hemmings. www.hemmings.com. There are several companies that deal in old car tires and wheels for old cars. It sounds like you have an axle from an old Plymouth or some other old Chrysler product.
Brad