As a result , Whymper hired the services of Christian Almer , who had been with Alfred Wills on the Wetterhorn in 1854 .
Whymper was unable to climb with his usual guide , Michel Croz , who had to wait for a client in Chamonix .
Whymper hired the services of Christian Almer , who had been with Alfred Wills on the Wetterhorn in 1854 .
Whymper was unable to climb with his usual guide , Michel Croz , who had to wait for a client in Chamonix .