1. H. C. Andersen, The Emperor’s New Clothes. Pages 81 to 88 in “Tales”, Vol. 1. Translated by R. P. Keigwin. Flensted Publishers, Odense 1971. [Naturally, there are countless other editions and translations.]
2. J. J. Burckhardt, Die Mathematik an der Universität Zürich 1916-1950 unter den Professoren R. Fueter, A. Speiser, P. Finsler. Beiheft Nr. 16, Elemente der Mathematik, Birkhäuser, Basel 1980.
3. H. Butterfield, The Whig Interpretation of History. Bell and Sons, London 1931.
4. B. Grünbaum, Review of “Geometric Symmetry” by E. H. Lockwood and R. H. Macmillan and “Symmetry: An Analytical Treatment” by J. L. Kavanau. Mathematical Intelligencer (to appear).
5. B. Grunbaum and G. C. Shephard, Incidence symbols and their applications. Proc. Symposia Pure Mathematics 34(1979), 199–244.