Hermann Esser (1900-1981) was founding members of the Nazi Party, briefly Adolf Hitler's deputy, then increasingly disliked in the party and not influential beyond 1929. From 1929 to 1933, he was the Nazi floor leader in the Munich city council, then a Reichstag member, then, from 1933 to the end of the war, undersecretary of tourism in the Reich Ministry of Propaganda and Public Enlightenment.
Esser was an effective speaker, and author of antisemitic articles in the Voelkischer Beobachter. He was known as a blackmailer, but Hitler was to say "I know Esser is a scoundrel, but I shall hold on to him as long as he is useful to me." Along with Max Ammann, Dietrich Eckhart, Ulrich Graf, Christian Weber, and Alfred Rosenberg, Esser was a member of his immediate traveling entourage in 1922. 
- Hermann Esser, Jewish Virtual Library
- William Shirer (1960), Rise and Fall of the Third Reich, Simon & Schuster, pp. 49-50
- Ian Kershaw (1998), Hitler 1889-1936: Hubris, W.W. Norton, ISBN 0-393-04671-0, p. 178
- Richard J. Evans (2003), The Coming of the Third Reich, Penguin, ISBN 1-59420-004-1, p. 205
- Kershaw, Hubris, p. 277