ABA Antiquarian Booksellers Association, the ABA is the senior trade body for dealers in rare and fine books and manuscripts in the UK and elsewhere
AJL Association of Jewish Libraries - a leading association of Jewish librarians around the world
Ephemera Society The Ephemera Society is a non-profit body concerned with the collection, preservation, study and educational uses of hand-written and printed ephemera.
ILAB International League of Antiquarian Booksellers
Jewish Historical Society of England Promotes the research and study of Anglo-Judaica
Joseph's Bookstore An excellent independent bookstore with a very strong selection of new Jewish books, artwork and literary events
PBFA Provincial Booksellers Fairs Association, the world's largest trade association for antiquarian and secondhand booksellers
The Seforim Blog Contains articles and reviews relating to Hebrew and Jewish books - A great site for the Hebraica and Judaica bibliophile