Marking 94 years since its first appearance, this book provides an annotated translation of Sainte-Lagu 's seminal monograph Les r seaux (ou graphes), drawing attention to its fundamental principles and ideas. Sainte-Lagu 's 1926 monograph appeared only in French, but in the 1990s H. Gropp published a number of English papers describing several aspects of the book. He expressed his hope that an English translation might sometime be...