Just look for history in your area. Here's a example of what was happing in Titusville at the turn of the century. Sounds like there should be a wealth of silver coins and older stuff in your area.
In the 1880's and 1890's, the citrus and fishing industries fueled Titusville's growth along with commercial shipping and a railroad connection between Enterprise (on the north shore of Lake Monroe near Sanford) and Titusville. Titusville's first railroad station was built in 1892.
Because of the "Great Freeze" of 1894-95, the citrus industry in northern Florida was decimated and the Indian River region became one of the leading producers of citrus. Much of the production and processing was centered in and around Titusville.
Like many other Florida cities of the late 1800's, Titusville had a catastrophic fire in 1895 that destroyed much of the central business core - Washington Avenue, between Broad and Julia Streets. Because of their propensity to burn, the woodframe pine buildings of downtown gave way to the masonry buildings of the turn-of-the-century. The greatest losers of the fire of 1895 were Mrs. M.E. Titus and Captain T.W. Lund, both owning several downtown buildings.
From an estimated population of 200 in 1880, Titusville grew to a bustling 900 in 1900. After the 'Freeze' and the 'Fire', downtown was rebuilt, and Titusville grew as a transportation and distribution center for produce and marine products as well as serving as the County Seat.
As the automobile became popular toward and into the 1920's, more vacationers ventured south on the new Dixie Highway, sparking another industry - Travel & Tourism - to the Indian River region and all along the east coast of Florida. The Florida Land Boom of the 1920's in South Florida bred new construction in Titusville, even beyond the traditional downtown. Subdivisions were born.