William Oliver was one of the founders of the California Cap Company. Many photos taken by William and his son Roland are online . Some of my favorites from this Bancroft Library collection are below.
These four tins predate the San Francisco earthquake. The Lion tin at top is very rare.
A nice illustration of the paper labels used to wrap single tins, and stacks of 5.
Crimpers used to attach caps to fuse.
The old adit with miner and wooden car.
A geologist hard at "work", next to miners cranking a whim.
Mine shaft in Mexico
Riding to work down an incline.
Real miners don't smile.