The time was not ripe for a bibliography of bibliographies and Labbé's contemporaries and immediate successors neither perceived the novelty of his idea nor fully appreciated its value. Contemporary recommendations of the book have a perfunctory flavor. Valentin Heinrich Vogler, who wrote an admirable survey of scholarly books entitled _Introductio universalis in notitiam cuiuscunque bonorum scriptorum_ (Helmstadt, 1670), is representative. He passed a judgment on a book that he had not seen. When Heinrich Meibom made a new edition of Vogler's handbook in 1691, he summarized Vogler's comment and having seen Labbé's book, added some characteristic and interesting remarks of his own: Vogler did not see it [the _Bibliotheca bibliothecarum_]. Nevertheless, with only a few excerpts available to him, he did not use bad judgment in saying that it offers only a brief review of authors arranged according to their names[74] and makes no comments on the way in which these men have dealt with their materials. Still, the work is very useful (_Utilis tamen valde labor est_), although I have found many authors cited, of whom some have no pertinence and others tell the lives of men who are famous for their reputations and deserts rather than in literary endeavors and writing. From not a few entries it would also appear that he has often not seen the books, but, deceived by the title, he has nevertheless cited them. This is, for example, the case when he cites David Frölich, _Viatorium_.[75] And he does not blush to make venomous remarks in his usual fashion about some excellent men, especially those who differ from him in religious matters.