emerged around the turn of the 20th century, when postcards came to function as surrogates for travel. People soon realized that postcards could be used to create or sustain a certain utopian myth about a town or region, and crafty photographers began to physically manipulate their photographs. Nowhere did these modified images, or "tall-tale postcards
" as they came to be called, become more prevalent than in rural communities that hoped to forge an identity as places of agricultural abundance to encourage settlement and growth. Food sources specific to the region — vegetables, fruits, or fish — were the most common subjects."
from World War I. Personal notes, propaganda, battle memorials, etc.