Shakespearean Criticism - Humanities Reference PR 2965 .S43Available electronically via Literature Criticism Online.
Indexes are especially good:look up a theme or motif, to learn where it's been treated in relation to a play, character, etc. Or, you can begin with a play, a specific character, and see the connections with theme and/or motif.
Articles/essays (written by noteworthy, even famous critics/ contemporaries) are arranged in chronological order - earliest to the latest - revealing trends in criticism over the life of the author/work. And finally (3), the articles/essays are reprinted in their entirety - full-text - and include the citations for the original publication.