Before free public libraries, commercial lending libraries rented books by subscription. London's Mudie's Select Library, founded 1842, grew so dominant that its bulk orders effectively dictated the three-volume format of the Victorian novel; Boots the chemist ran a Book-Lovers' Library inside its shops from 1899. Cheap paperbacks and tax-funded public libraries destroyed the business model — Mudie's closed in 1937, Boots' library in 1966.
Circulating-library proprietor no longer exists as a living trade. Here is what erased it, and which profession took on the work.
1450 – 1850
Print, princes and scholar-librarians
Gutenberg's press multiplied books beyond any prince's ability to know his own shelves, and courts hired scholars to impose order: Gabriel Naudé built Mazarin's library and opened it weekly to scholars from 1643, Gottfried Wilhelm Leibniz ran the ducal library at Wolfenbüttel from 1691 while inventing calculus disputes and cataloguing schemes alike, and an aging Casanova sorted the Count of Waldstein's books in Bohemia. Legal deposit, national libraries and the first public lending collections all date from this stretch.
What else was happening then
1841
Panizzi's 91 cataloguing rules
Antonio Panizzi, an Italian political exile risen to Keeper of Printed Books at the British Museum, publishes 91 rules for constructing its catalog — the first rigorous cataloguing code, forcing consistency in how authors, titles and editions are recorded. Every later code, from AACR to today's RDA, descends from the arguments Panizzi won.
1876
The modern profession is born in one year
In a single American year: Melvil Dewey publishes the Dewey Decimal Classification, the American Library Association is founded in Philadelphia, Library Journal begins publication, and Charles Ammi Cutter publishes his Rules for a Dictionary Catalog. Librarianship acquires a professional association, a literature and its two most influential organizing tools almost simultaneously.
1883–1929
Carnegie builds 2,509 libraries
Steel magnate Andrew Carnegie funds 2,509 library buildings across the English-speaking world — 1,689 in the United States — on a strict formula: he pays for the building, the town must provide the site and commit roughly ten percent of the grant every year to run it. The free public library becomes ordinary civic furniture on three continents.
1931
Ranganathan's Five Laws
S. R. Ranganathan, university librarian of Madras, publishes The Five Laws of Library Science — books are for use; every reader his book; every book its reader; save the time of the reader; the library is a growing organism. Eighty years on, they remain the profession's most quoted statement of purpose in any language.
Where that work lives now
The keeper and guide of recorded knowledge, from Nineveh's clay tablets to the e-lending fight — organizing what humanity knows so that anyone can find it.
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