For the record, there is one 1940s JATP concert that is not included in the Verve box--a 1949 Carnegie Hall session for which Pablo (i.e., Concord/Fantasy), and not Verve, owns the rights:
It's a real doozy and shouldn't be missed (just check out the lineup on the cover), and is available on a Pablo CD here.
I have the Verve box and haven't listened to it in some time, but it's a great document of that genre and era if you can swing the cost.