This was a very nice find that covered a 'kind' of grey area in my education from the Kamakura era + Mongol invasion through to the Sengoku era. The material is scholarly and , this is odd I know, but kind of energetic. I guess it came out of one of the first conferences of it's kind between American and Japanese historians. And at this point, c.a. 1980 really isn't all that old in terms of the bulk of the information that was given.
I was pleased that it was essays gathered from a number of academics as it made for a much more interesting read and each essay was on a completely different but very specific facet of the era, so each one was super focused and well constructed.
Of course, you then get into the issue of some writers being far better then others and so then how do you judge a book like this overall. I'm ~20% through the other book on the time period I found, 'state of War' by Conlan and there just aren't that many readily available resources on the age unless you 1) can go sit in Midtown in the library for several days to read books the NYPL won't allow to be borrowed or 2) track down used copies online which are often ridiculously expensive.
Which is the long way of saying it was a good read and if you're not going to school has a historian in Medieval Japanese History, it should be easy enough to get your hands on this. As such, for the right person, I highly recommend it to help fill in information pertaining to the northern and southern courts, the rise of the Ashikaga, and of course, everything leading up to the Onin War.