Here are the counts for parcels of land mapped, by the decade in which the corresponding land patents were issued:Decade Parcel-count 1840s 137 1850s 864 1860s 440 1870s 748 1880s 1480 1890s 1569 1900s 1230 1910s 912 1920s 133 1930s 31 1940s 3 1950s 39 1960s 7.