David I. Davis, The modern packing house (1903)
“ In no department of the industry has the progress been so extensive as in pork packing. Only a few years ago, comparatively, it was impossible to kill hogs for packing purposes, except during the winter season, and the various packing plants located throughout the country worked during the winter months in their crude way, packing as many hogs as conditions would permit, turning out the cured meat in the spring, in inferior condition. ”
