Most of the photos on this site were extracted from reference images (high-resolution tiffs, 20 to 200 megabytes in size) from the Library of Congress research archive. (To query the database click here.) Many were digitized by LOC contractors using a Sinar studio back. They are adjusted by your webmaster for contrast and color in Photoshop before being downsized and turned into the jpegs you see here.
Vintage photos of:

April 1865. "Cold Harbor, Virginia. Collecting remains of dead on the battlefield after the war." Memento mori. Wet plate by John Reekie. View full size.

February 1939. "Auto parts store in Corpus Christi, Texas." Welcome to Dad's. Medium-format nitrate negative by Russell Lee. View full size.

January 1939. "Sunflower Plantation. Son of tenant farmer in corner of living room. Pace, Mississippi." Note Sonny's suction-cup ammo. Large-format nitrate negative by Russell Lee for the Resettlement Administration. View full size.

UPDATE: It took only a few minutes for you to pinpoint the location to Appleton, Wisconsin. Well done! This is one of the Janet & Kermy Kodachromes, labeled "Wisconsin plane trip 1962." The slide was processed in October 1962.
A 35mm Kodachrome from the Shorpy archives that I scanned last night. Where are we, and when? See the comments for your answers. View full size.

Georgia circa 1904. "Savannah Cotton Exchange." Note cotton-themed fountain landscaping and juvenile welcoming committee. 8x10 inch dry plate glass negative, Detroit Publishing Company. View full size.

February 1936. "Once a Missouri farmer, now a migratory farm laborer on the Pacific Coast, California." A possible prequel to The Grapes of Wrath. Photo by Dorothea Lange for the Farm Security Administration. View full size.

Back we go to my home town of Larkspur, California for another view of the Rainbow Market, where my father worked for several years in the mid-1950s. The linked photos and their comments give plenty of background, so here I'll just mention a couple childhood memories this one dredges up (I was 9 at the time my brother took this Anscochrome slide). The hulking 1930s black sedan belonged to my mother's friend Mrs. Skala, who a year later bought a 1956 Plymouth from Hil Probert, whose DeSoto-Plymouth dealership was across the street from our house a couple blocks away. My mother was incensed that Probert allegedly talked the 60ish lady into a model with the push-button automatic transmission. "Imagine the poor woman trying to learn how to use something like that at her age. The idea." Well, that's a paraphrase, but I never did hear if Mrs. Skala had any problems. Mr. Gilardi, the butcher who's billed on the market's window, had a portion of one finger missing from some slicing or chopping mishap, so naturally that's what I always stared at while my mother talked pot roast or ground chuck with him. Or maybe that was Charlie Young, the butcher at Fred Schefer's Food Center next door to the right. We switched our trade to the Food Center after my father left the Epidendios' employ.