Ludwig Ernst August Bachmann (1856-1937) was a German chess author and chronicler of chess.  He worked for the Bavarian railway as a senior official.  In his spare time, he collected information on chess events and put them in yearbooks (Schach-Juhrbuch), from 1891 to 1930.  He wrote 44 volumes of chess events and yearbooks.  His nickname was the ‘Chess Herodotus’.  He was the first person to issue a yearbook on chess.