Contains nine subseries of manuscript and typescript materials by Belloc and consists of articles, essays, books, lectures, speeches, notes, syllabi, plays, dialogues songs, poetry, and an autobiography, dictated in 1936, and tentatively entitled Memoirs. Also contains manuscripts by other authors including a book by Dorothy Cox and work by Belloc's sister Marie Belloc Lowndes and son-in-law Reginald Jebb.