Construction workers, railroad men, factory workers, miners, Empire State Building construction. 69 photos in all.
Here's a sample of other books in this Dover category
Art Forms in the Plant World: 120 Full-Page Photographs by Karl Blossfeldt Blossfeldt's exquisite sharp-focus photo studies of plant form — leaves, buds, stems, seed pods, tendrils and twigs — won acclaim with publication of the 1928 edition of this book.
How the Other Half Lives by Jacob Riis This famous journalistic record of the filth and degradation of New York's slums at the turn of the century is a classic in social thought and of early American photography. Over 100 photographs.
Victorian London Street Life in Historic Photographs by John Thomson Classic document of social realism contains 37 photographs by famed Victorian photographer Thomson, accompanied by texts offering sharply drawn vignettes of laborers, dustmen, street musicians, shoe blacks, more.
Old New York in Early Photographs by Mary Black New York City as it was 1853-1901, through 196 wonderful photographs: great blizzard, Lincoln's funeral procession, great buildings, much more.