A man stands near a cabin snowed in at Boreas Pass. Photographer's stamp: "O. Westerman Photographer Breckenridge, Colorado" and handwritten "cabin in mid winter snowed in at Boreas Pass".

A little girl looks through one of the snow tunnels used to cross Main Street in Breckenridge, Colorado, during the "Big Snow" winter of 1898-1899. Behind her are two women standing in front of the Livery building. Quoted from handwritten text on the reverse: "Big snow 1899".

Two men outside a rustic log cabin in Illinois Gulch, east of Breckenridge, Colorado. One man fishes from a log bridge while the other man pans for gold near the cabin entrance. Smoke from the Colorado and Southern (C&S) railroad locomotive is visible on Rocky Point above. Circa early 1900s.

A miner's pack (or jack) train loaded with supplies, including a stove. Two burros stand on a dirt road lined with wooden frame buildings. Title quoted from handwritten caption on card mount: "A pack train."

A woman, dressed in a white high neck blouse and long dark skirt, sits on a rock outcropping in a mountain valley. She rests one hand on a hat placed next to her and holds a pine bough on her lap with her other hand. Trees and mountain peaks in the background. Colorado, circa late 1800s.

136-ounce mass of crystalized gold from the Gold Flake vein on Farncomb Hill called "Tom's Baby". Found on July 23, 1887 by Harry Lytton and Tom Groves outside of Breckenridge, Colorado. Title quoted from handwritten caption on card mount: "Actual size of a gold nugget, taken from Farncomb hill."

Looking south down Ten Mile Canyon, Summit County, Colorado near the "SKY" chutes east of present day Copper Mountain. Avalanche debris covers the narrow gauge railroad tracks. Handwritten on the reverse: "effects of a great snow slide in Ten Mile Canon [sic]."

Handwritten captions under each mounted photograph: "The Washington mine, showing ten mile Range."; "Tourists starting for the Mountains."; "Jack train loaded with Ore."; "Main St of Breckenridge in mid Winter."; "Mode of hauling Lumber by a jack train".

Handwritten captions under each mounted photograph: "Monument erected by Tourists on the Summit of Bould [sic] Mountain."; "Carter Museum."; "Exterior view of a gold mine."; "Interior view of Stamp Mill."

Handwritten captions under each mounted photograph: "Gulch mining"; [no caption]; "Winter sport on Snow Shoes."; "Rocky Point near Breckenridge."

Handwritten captions under each mounted photograph: "View on Farncom [sic] hill."; "Spruce Creek falls."; "A pack train."

Handwritten captions under each mounted photograph: "The three Mountain peaks at Frisco."; "View showing first fire on the Mountains"; "Main St. Breckenridge four ft of Snow, May 10th 1889."

Two photographs of J. Frank Willis in his home in Breckenridge, Colorado. No handwritten captions.

Four people sit in a rowboat near the edge of Black Lake in the Gore Range mountains with Mount Powell in the background. Handwritten on the reverse "Blake [sic] Lake. Below Dillon showing Mount Powell 500 feet above [illegible] the lake." Photographer's stamp: "O. Westerman, Photographer, Breckenridge, - Colorado."

View from Shock Hill looking east over the town of Breckenridge, Colorado towards Bald Mountain. The Denver South Park and Pacific (DSP&P) railway tracks and train depot are in the foreground, west of town. Title quoted from handwritten caption on card mount: "Breckenridge Colo, from Shockhill, looking west."

Photographer's contact sheet with four small, individual prints. From top: Four children sit on a burro, with one young girl holding the reins; a man stands next to a burro carrying a load: burro pack train; burro pack train carrying pipes. Breckenridge photographer Otto Westerman's stamp is on the reverse. Circa 1880s-1900s.

Photographer's contact sheet with two individual prints. The top image shows a group of people with a dog and two burros on the ridge of a mountain. Bottom image shows two men standing near burros carrying lumber. Breckenridge photographer Otto Westerman's stamp is on the reverse. Circa 1880s-1900s.

Breckenridge, Colorado looking north down the Blue River valley. Railroad tracks are visible on Barney Ford Hill. The steep hillside is sparsely covered with thin trees. In the far distance is the snow-covered peak of Buffalo Mountain. Abbreviated title taken from handwritten caption on card mount: "Breckenridge, looking down the Blue river valley, showing R.R. track on Niggerhill to the right and Buffalo Mountain at Dillon, ten miles distance."

The town of Breckenridge, Colorado looking west from Barney Ford Hill. Tenmile Range in the background. Handwritten caption on card mount: "Breckenridge from Niggerhill, showing ten Mile range, 13,000 feet above Sea level six miles distance."

Edwin Carter's residence and museum in Breckenridge, Colorado. Built in 1875, this one story simple gable log cabin has a log addition on the south side. View of Tenmile Range in the background. Title quoted from handwritten caption on card mount: "Carter Museum."