German Ax Murderer in America - Ann Marie Ackermann's author website
Was a railroad-hopping serial killer responsible for the Midwest's most infamous ax murders?
Clementine Barnabet - Wikipedia
The Axe-idental Tourist: Part 2
The Axe-idental Tourist: Part 3
Book suggests suspect in Villisca ax murders was overlooked - Radio Iowa
Villisca axe murders: New book suggests Paul Mueller is responsible
The Crooked Door Podcast | Minneapolis MN
The Axe-idental Tourist: Part 1
The Axe-idental Tourist: Part 1
Villisca axe murders - Wikipedia
10 Terrifying Facts About The Man From The Train - Listverse
The Lost Boys – Texas Monthly
Hinterkaifeck murders - Wikipedia
Paul Hermann Müller - Wikipedia
Descendants of lynching victim: Don't assign blame without proof - Salisbury Post | Salisbury Post
Georg Pedrick Paul Mueller (1856-1925) - Mémorial Find a Grave
The Father-Daughter Duo Who Found the Truth Behind a String of Century-Old Murders | by Elon Green | MEL Magazine | Medium
Villisca axe murders: New book suggests Paul Mueller is responsible
Was a railroad-hopping serial killer responsible for the Midwest's most infamous ax murders?
10 Terrifying Facts About The Man From The Train - Listverse
Villisca Axe Murders. Background: | by Marlena Smith-Burris | Medium
Thomas Briggs murder on train by Franz Muller gripped Victorian Britain | Daily Mail Online
Murder in Brookfield in 1898
Minnesota Murder Victim Identified 41 Years Later
The Father-Daughter Duo Who Found the Truth Behind a String of Century-Old Murders | by Elon Green | MEL Magazine | Medium
