The listings for The Oxford Dictionary of Quotations in this group bear neither edition numbers nor ISBN... so getting them properly grouped is challenging. Only third editions and later bear an ISBN, so I'm assuming these are probably second editions, but they could also be first editions. With no certain way to tell, I'm keeping them as a separate group for now. If you know which edition of the Oxford Dictionary of Quotations you possess, please list the edition in parenthesis after the title. This will help to put your book in the correct group.