This brochure brings together the main data to help the reader interested in W. Kelly's erudite comments. After a brief presentation of the different types of manuscripts (uncial, cursive, papyrus, lectionaries, ancient versions) and the main commentators, editors and editions in relation to the Greek New Testament, the reader will find the list of manuscripts cited by W. Kelly, reconstituted from the 8th edition (Octava Critica Maior) by Tischendorf. An appendix with the characteristics of current textual criticism, compared to those of W. Kelly's time, has been added.