A large scale orthophoto map topographic map would likely be found in a national mapping agency or a government mapping department. These organizations typically produce detailed topographic maps that include orthophotos (aerial photographs that have been geometrically corrected) for accurate representation of the terrain. Examples of countries known for producing large scale orthophoto topographic maps include the United States Geological Survey (USGS) in the United States, Ordnance Survey in the United Kingdom, and Geoscience Australia in Australia.
