These images illustrate different aspects of the history of mining in Alaska. A set includes one each of the following:
16. The Invincible Prospector
28. Crew of Union Mining Co., "The Face" in a Placer Mine.
32. Hydraulic Mining
51. Chatanika Gold Dredge
133. Tom Cummings No.11 Goldstream
Each set contains six notecards which are blank inside and six envelopes, all in a lovely white box with a clear cover.