Dewey, Melvil
"A Classification and Subject Index for Cataloguing and Arranging the Books and Pamphlets of a Library" by Melvil Dewey is a library classification system published in 1876. This revolutionary 44-page pamphlet introduced a decimal-based method for organizing books by subject rather than acquisition order. The system uses three-digit numbers with fractional decimals, allowing books to be shelved in relation to similar topics. What began as a modest guide has expanded through 23 editions and now serves 200,000 libraries across 135 countries, fundamentally transforming how libraries organize knowledge. (This is an automatically generated summary.)
These books are free to read. Each is in the public domain in the United States; check your own country's rules before you copy or share one.