Comprises: (fols. 1-31) 'Handlist of Incunabula' apparently collected and listed by Lyell during his Hampstead period (i. e. before 1927), arranged by place of printing and by author (fols. 32-62) a (partial?) slip-catalogue numbered '(28) 1' to '29 (8b)', n.d., comprising detailed bibliographical descriptions by Lyell, possibly not of his own books