Hi Bruce!! Welcome from another neighbor...Chapel Hill. Nice looking cub!
There are cross reference lists of seals and bearings here...will try to find the link for you later....and I have had good luck with Walker's NAPA for most of them. The price is usually quite a bit less than IH but if you cannot get them anywhere else, Clapp Brothers in Siler City should have them. They are great folks especially if you get Joe. He definitely knows these tractors!
If you have questions or need a hand with a project, just holler. You will probably get at least a couple volunteers. I am retired so am generally around. Just getting ready to start an engine rebuild, which I haven't done before, but have replaced most seals at one time (except front crankshaft , but that one is coming!!)
So welcome aboard and start asking those questions...lots of eager knowledgeable folks waiting to help.
PS As Joel mentioned, check the links above...almost ALL the manuals for the cub (owners, service, parts, implements, etc) are available for free, thanks to generous forum members. Spend some time roaming the "How To" lists, etc. I am constantly finding stuff and have been reading for a few years!!