The document provides descriptions of 18 colonial and early American buildings representing various architectural styles from the 1600s to 1870s. It summarizes the key details and influences of each building, including their materials, prominent architectural features, and cultural influences. The buildings highlighted include examples of Spanish Colonial, English Colonial, Georgian, Federal, Neoclassical, Greek Revival, Gothic Revival, Italian Revival, Cast Iron, High Victorian Gothic, Second Empire styles. Locations span from New Mexico to Virginia, Massachusetts, Pennsylvania, Washington D.C., and beyond.