[183] The biographies of Enselin and Engelmann in the _Allgemeine deutsche Biographie_ are quite inadequate, and Wilhelm Müldener is not included in it. See several references to the Enslin and Engelmann firms in the _Katalog der Bibliothek des Börsenvereins der deutschen Buchhändler_ (2 v.; Leipzig, 1885-1902), I, 221, II, 880. [184] The United States Government might also be mentioned as a major supporter of bibliography. [185] He is referring to lists of books printed on vellum or colored paper. [186] He cites no example of such a bibliography. [187] He is referring to lists of miniature books. [188] He probably means bibliographies of religious orders but some of the examples could be put in other classes. [189] Examples are bibliographies of editions of the Bible, the _Imitatio Christi_, Ariosto's _Orlando Furioso_, and Tasso's _Gerusaleme liberata_. [190] He includes dictionaries of pseudonyma. [191] He includes bibliographies of obscene books here, but might perhaps have set up a separate class for them. [192] This book by Ralph Thomas does not appear in the article "Pseudonyms." [193] This does not appear in the list of bibliographical journals at the end of the article. [194] I mention here Winslow L. Webber (b. 1898), _Books about Books_ (Boston, 1937), primarily because of its title. This annotated list of books and articles useful to collectors of incunabula, English and American first editions and rarities, and Americana does not intend to be a general bibliography of bibliographies. Webber's comments are occasionally instructive or entertaining, but his references are distressingly careless. "Pretsholdt's" (p. 19) for "Petzholdt's" speaks for itself. The chapter "Magazine References" (pp. 136-162), which contains a survey of articles published in British and American journals between 1900 and 1937, is perhaps the most useful part of the book. [195] "Bibliographie der Bibliographien--eine internationelle Angelegenheit," _Archiv für Bibliographie, Buch- und Bibliothekswesen_, I (1926), 188-200. [196] _Nordisk tidskrift för bok- und bibliotheksväsen_, XXVII (1940), 61. [197] _Centralblatt für Bibliothekswesen_, XX (1903), 405-444. [198] See R. C. Christie's important remarks in "Biographical Dictionaries" in his _Selected Essays and Papers_ (London, 1902), pp. 1-57. [199] _Nordisk tidskrift för bok- och biblioteksväsen_, XXVII (1940), 65. [200] See Joannes Rhodius's list of pseudonyms (col. 130). For the identification of this see Taylor and Mosher, p. 262. [201] The example readiest to hand is a dissertation by Hugo Paas cited in Taylor and Mosher, p. 84, n. 14. This contains a good bibliography of German studies in the law of pseudonyms. [202] The quoted passages will be found in the Preface to the Second Edition (I, p. [vii]) and the Introduction (I, p. xxiii).