You have more than one? Sweet! Is there a particular book you might recommend on the older Morgans?
Actually I have quite a few. "Original Morgan" by John Worrall is a good one to start with. I know John and have spent time with Him. "Completely Morgan" 1936 to 1968 by Ken Hill does a good job for pre +8 Morgans.
The 4/4, +4 and +8 are far different as well as the era it was built. I now have 3 Morgans. '63 +4-4STR, '61 DHC with Zetec Engine and a +8 Bitsa (Bitsa is a Brit word meaning "built of this and that". I must say the +4 is the best handling, best riding Morgan and I use it on My Long trips which include Seattle to New Orleans to Montreal to Nova Scotia to Seattle, Seattle to Key West to Seattle, shipped to France for LeMans and back to Boston and driven back to Seattle and lately a run in the Rocky's of Wyoming with Morgan Friends.
My advice is to buy the best You can afford. Playing catch up is very expensive and unless You are a Morgan Craftsman very hard to do correctly.