Roger Schaeli Makes Second Ascent of La Vida es Silbar, Eiger North Face - Rock and Ice Magazine
Morte sull'Eiger" di Giovanni Capra - Cartonato - EXPLOITS - Il Libraio
Roger Schaeli climbs the Eiger 50 times
Rare repeats of hard Eiger North Face routes
Daniel Anker - Filmography - MNTNFILM
Giovanni Quirici dies on Eiger
Corti Drama" - SWI swissinfo.ch
Roger Schaeli repeats Eiger North Face La vida es silbar
UKC Articles - The Eiger Nordwand Revealed: Rainer Rettner Interview
Eiger - Wikipedia
Books by Daniel Anker | Book Depository
Eiger-Nordwand. Mit Nagelschuhen und Hanfseil auf den Spuren der Erstbegeher by Anderl Heckmair Thomas Ulrich Daniel Anker - 2003 - from Wunderkammer Japan (SKU: IF-Y76T-DD8N)
Chronology of the Eiger - Erstdurchstieg Eigernordwand Grindelwald
Eiger: The Vertical Arena: Anker, Daniel, ed.
Eiger: The Vertical Arena by Daniel Anker | LibraryThing
Daniel Anker, Maker of Powerful Documentaries, Dies at 50 - The New York Times