This series consists of personal and business correspondence to and from Philip Barry in the form of holograph and typescript letters (mostly signed), telegrams, and holograph drafts of telegrams. The correspondence relates chiefly to the writing, publication, and productions of Barry's plays. Much of this content is from writers, actors, publishers, and producers sending notes of encouragement and congratulations to Barry, and it extends to letters of appreciation from audiences, discussions of published reviews, and requests for work. Most of the remaining correspondence is of a more personal nature, primarily from Barry's immediate family members and close friends.