Rick,
My 73 P POH is complete, but does not have a 4-11 or 4-12. 4-10 is the CG envelope chart, which I would be happy to send you if you wish.
You can also buy a complete new manual from Cessna. Below is a link to the information. It is only $28...or was that price last time I checked.
http://www.337skymaster.com/messages...=&threadid=400
Kevin