1981. Ruger, A., cartographer. Bird's-eye view.; Facsimile.; Includes illustrations and index to points of interest. Scale not given. Allen County-Fort Wayne Historical Society.
1998. Palmatary, J. T.(James T.), cartographer. Panorama.; Shows view of Indianapolis from the top of the Asylum for the Blind.; Though credited ... as being 'drawn from nature' by E. Sachse, the... Indiana Historical Society.