The town of Ryan serves as the primary hub of this agricultural landscape in Delaware County, organized around a rectilinear grid of section roads and local avenues. This area is characterized by a series of small watercourses that drain the farmland, including Buck Cr and Nugents Cr, which meander through the prairie independent of the township lines. For those researching local history, the map provides a clear record of communal burial grounds that serve the surrounding rural neighborhoods. These include Peace Cem, Golden Prairie Cem, and Calvary Cem north of the county line, along with Nugents Grove Cem and Pleasant Hill Cem further south. The Linn-Delaware Rd marks the southern boundary of the quadrangle, illustrating the transition into Linn County.
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This is the sole edition of this map. No revisions or reprints were ever made.
1888 · Marion
USGS Topo · 1:62,500
1889 · Marion
USGS Topo · 1:62,500
1890 · Anamosa
USGS Topo · 1:62,500
1900 · Anamosa
USGS Topo · 1:125,000
1903 · Winthrop
USGS Topo · 1:125,000
1959 · Dubuque
USGS Topo · 1:250,000
1961 · Dubuque
USGS Topo · 1:250,000
1962 · Dubuque
USGS Topo · 1:250,000
1968 · Central City
USGS Topo · 1:24,000
1973 · Manchester
USGS Topo · 1:24,000