Discussion of the library and its documentary evidence, with new editions of the following sources and more, is forthcoming by N. L. Ramsay & J. M. W. Willoughby, The Libraries of the Secular Cathedrals, CBMLC.
Booklists included in the inventory of the treasury, 1245, printed from St Paul's Cathedral, MS W.D.9 by W. Sparrow Simpson in Archaeologia 50/2. 496–500, and of 1295, printed by W. Dugdale, History of St Paul's (edn 1818), pp. 310ff, from W.D.16; collation and corrections by Simpson pp. 360–64. The earlier list is truncated in W.D.9 but a version of it made in 1255 exists in full in W.D.4 ('Liber L'), fols. 112–115, printed by N. R. Ker in his Books, Collectors and Libraries (London 1985), pp. 215–30. The latter list exists also in W.D.3, fols. 3v, 12r–13v, and Bodl. MS Ashmole 845, fols. 174, 181–184. List of service-books, 1445, printed from a St Paul's MS by Simpson, p. 523, second folios given. Catalogue of the new library in 1458, giving second folios, in BL MS Cotton Roll xiii.24, printed by Dugdale, St Paul's, pp. 392ff. [cited here as Cat.] List of mainly service-books in the treasury in 1486, giving second folios, in Cotton Roll xiii.24, printed ibid. 399ff. List of 126 books bequeathed by Bishop Ralph Baldock (d. 1313), in Dean and Chapter Library, Mun. A. box 66 no. 17, printed in BRUO 2147–8. A list of over 100 school-books bequeathed by the almoner, William of Ravenston, to his successors, 1358, in Mun. A, box 67 no. 46, printed by E. Rickert in Modern Philology 29 (1932) 257–74. List of titles noted by Leland, printed in Collectanea, 4. 47 and De scriptoribus Britannicis, pp. 216, 230, 328, 403.
The Registrum Anglie reported 135 titles from the library assigned the numeral 19, a numeral applied in error to two libraries: St Paul's and Waverley abbey. Of these two, there are grounds for preferring St Paul's. See R. H. Rouse & M. A. Rouse, CBMLC 2 (1991), 259–60.
Many of the MSS in the 1458 catalogue are listed in three post-medieval catalogues: (a) At St Paul's by Patrick Young, c. 1622; (b) Bodl. MS Rawlinson D. 888, fols. 2–5, listing 164 MSS and 67 printed books removed from St Paul's in 1647 to Sion College, London; (c) Sion College, MS dated 1650. Nearly all the MSS removed to Sion College were destroyed in the Great Fire of London, 1666.