Reading an excellent book recently out at Amazon.com :
BUSH PILOT WAY by William A. (Bill) Quirk, III
Focusing on "Flying and Training in Alaska to Become the Best Pilot You Can Be"
His writing demonstrates decades of particularly high level expertise in very demanding, unimproved bush type and glacier terrain.
Excellent reading and superb pictorials.
The extensive Part III Memoranda's information is a unique approach I've not seen before.