 Episodes in 19 & 20C Euclidean Geometry by Ross Honsberger, April, 1995
 The Poincare HalfPlane: A Gateway to Modern Geometry by Saul Stahl, 09 April, 1993
 Euclidean and NonEuclidean Geometries by Marvin J. Greenberg, August, 1993
 Proclus by Glenn R. Morrow, Proclus, et all 19 October, 1992
 The Foundations of Geometry and the NonEuclidean Plane by George Edward Martin, January, 1996
 Geometry and Its Applications by Walter J. Meyer, Walter A. Meyer, March, 1999
 Geometry for College Students by Peter B. Geltner, Darrell J. Peterson, May, 1995
 Eigenvalues in Riemannian Geometry by Isaac Chavel, November, 1984
 Projective and Euclidean Geometry by William Thompson. Fishback, June, 1980
 Geometry of Sets and Measures in Euclidean Spaces: Fractals and Rectifiability by Pertti Mattila, April, 1999
