After Pepys gave up keeping his diary he started collecting broadside ballads and chapbooks/histories/garlands. His library is at Cambridge University and they have published many volumes based on his library. His broadside ballad collection, over 1700 of them, was published in 5 volumes in 1987, and all are listed in the broadside ballad index on my website (Mudcat's Links). Prior to that Roger Thompson published in 1976 'Saumel Pepys' Penny Merriments' which gives excerpts from some of the chapbooks, histories and garlands, and gives a complete listing of Pepys 3 volumes of them on pp. 297-302.