Use the color poster/large format plotter printer to print large size online maps.
Costs are 1.5 cents per square inch (about $10.50 for a typical USGS 7.5 topo quad)
For more details see the Color Poster / Large Format Plotter Printer section in:
The library has U.S. topographic maps from the U.S. Geological Survey (USGS) at the following scales:
The library has topographic maps for the following regions and scales: