But one surprising defender of the practice has, as far as I am aware, been overlooked in these discussions: Seymour de Ricci (1881–1942), probably best known for his Census of Medieval and Renaissance Manuscripts in the United States and Canada (1935–37). In addition to this vast union catalogue, de Ricci also catalogued a few private collections, such as the books and manuscripts of the first Lord Amherst of Hackney (1835–1909) in 1906, and in 1913 an exhibition catalogue of miniatures belonging to the Parisian art historian and dealer Léonce Rosenberg (1879–1947):
Rosenberg cannot be given credit for forming the collection, however; almost all the leaves and cuttings in this catalogue are recorded as having come from the collection of Arthur Sambon (1867–1947), a numismatist and dealer.
|Arthur Sambon in 1912|
de Ricci wrote a preface to the Rosenberg catalogue (available through Gallica) which is worth reproducing here in full, as it contains some surprising justifications for the cutting-up of manuscripts and the collecting of single leaves and miniatures: