Emil Artin was one the leading personalities of algebra and number theory from the early part of the 20th century. He was the only mathematician to solve two of the famous Hilbert problems and many important notions now bear his name: artinian rings, the Artin reciprocity law, Artin L-functions, etc. The present volume of 'History of Mathematics - Sources' reprints a selection of Artin's work: his three famous short books (The Gamma Function, Galois Theory and Theory of Algebraic Numbers) and ten papers, mainly on algebra (on braid groups, real fields etc.), three of which appear here in English for the first time. Michael Rosen has written an introduction providing interesting comments on the reprinted work and a brief biographical sketch starting from Artin's childhood in Reichenberg (Liberec) and covering his emigration to the USA and his final return to Hamburg.