German Ax Murderer in America - Ann Marie Ackermann's author website
Georg Pedrick Paul Mueller (1856-1925) - Mémorial Find a Grave
Notes from the Frontier - PART 3: THE AXE-IDENTAL TOURIST Paul Mueller's reign of terror between 1898 and 1912 included more than 25 cases and probably more than 100 victims from coast
Was a railroad-hopping serial killer responsible for the Midwest's most infamous ax murders?
The Crooked Door Podcast | Minneapolis MN
10 Terrifying Facts About The Man From The Train - Listverse
Was a railroad-hopping serial killer responsible for the Midwest's most infamous ax murders?
The Axe-idental Tourist: Part 2
Villisca Axe Murders. Background: | by Marlena Smith-Burris | Medium
Book suggests suspect in Villisca ax murders was overlooked - Radio Iowa
10 Terrifying Facts About The Man From The Train - Listverse
The Man from the Train - Wikipedia
Were the 1906 deaths of 4 Cape Bretoners the work of an American serial killer? | CBC News
The Axe-idental Tourist: Part 1
The Axe-idental Tourist: Part 3
Thomas Briggs murder on train by Franz Muller gripped Victorian Britain | Daily Mail Online
Was a railroad-hopping serial killer responsible for the Midwest's most infamous ax murders?
Paul Hermann Müller - Wikipedia
Minnesota Murder Victim Identified 41 Years Later
Villisca axe murders: New book suggests Paul Mueller is responsible
The Axe-idental Tourist: Part 1
