While small-scale placer mining continued for over forty years, lode development was largely confined to the period between 1934 and 1941, the district's most significant era.

Unusually complete, it retains virtually all of its historic components, including an important placer site, a camp, four discrete lode mines, a mill, and an associated transportation network.

[3] The Yellow Band mining camp is one of the region's most complete, not only containing the typical housing and office facilities, but a sophisticated hydroelectric system.

While Lucky Girl mill is now ruinous due to repeated avalanche strikes, its operating machinery remains intact and in most cases in situ.

[2] In addition to Baldwin, the Bremner district is associated with aviator Merle "Mudhole" Smith, who started flying supplies for the Cordova Air Service in the 1930s, and who became stuck on the upper Golconda strip.