I got my copy many years ago. It is not in frequent use now, as I have many other books. However, often if I am searching for a particular tune, this is a place where it is found when other sources do not have it. And every book comes off the shelf for a browse from time to time.
It is arranged in sections - the titles of the sections may help to give you a flavour of the contents:-
-Tunes published before 1730
-The English dancing master 1651 (a facsimile reprint, difficlt to read in places)
-The Beggar's Opera 1729 (also a facsimile reprint)
-Morris, sword dance and ceremonial tunes
-The Lichfield morris dances (another facsimile reprint)
-Five Northumbrian pipe tunes (from "A tutor for Northumbrian small pipes" by J.W.Fenwick, published late 19th century)
-Country dance tunes in 6/8, 9/8, and 3/4
-Country dance tunes in 2/4, 2/2, and 4/4
-Tunes written by Michael Raven
-Some tunes from the editor's notebook.
You find tunes which are also included in other publications, but altogether well worth having.