Thanks for the welcome. The book was a single volume. It contained most of the Beatles songs including George Harrison's compositions - I remember this because I leaned a rendition of Something from this book. It was what I would call the standard size for a music book and I bought it in a music store in Philadelphia in the early mid-70s, probably around 1973 or 74. It was written for piano, vocal and had guitar chords. I do remember the pages were an off white color (even when it was new).
I vaguely remember the cover being black but the cover was also worn and then torn off from use so I may be mistaken. Like I said, the unique thing about the book was how comprehensive it was and the lyrics dictionary. Otherwise, I am sure I could find the songs/music in some of the more recent publications.
That is really all I have - not much help I know but it was a long time ago - but I do appreciate the replies.