Previous changes: up to July 2022

We have added two new History Topics.

An account of the earliest African Americans who gained PhDs is at THIS LINK.

An account of the discovery of the minor planet Ceres is at THIS LINK.

A description of the Anstruther Solar System model is at THIS LINK.

We have added "album pages" for each of the mathematicians and countries on the Mathematician stamps page. For example see THIS LINK or THIS LINK.

We have added an "event" to many of our Mathematician of the day pages.

We have 33 new biographies:


There are 10 new entries in our Additional material category. Each is linked to the biography on the left.

Davies_GriffithGriffith Davies Tables of Life Continencies
Dienes_PaulPaul Dienes' books
Dienes_Zoltan Zoltan Dienes' books
GaussTheory of the Motion of the Heavenly Bodies Moving about the Sun in Conic Sections
HogbenLancelot Hogben's books
PiazziTheory of the Motion of the Heavenly Bodies Moving about the Sun in Conic Sections
Pierce_JosephNegro Business and Business Education
RigbyJohn F Rigby's publications
Stephens Clarence F Stephens Advice to Teachers
Williams_EvanEvan James Williams: Atomic Physicist
Williams_EvanEvan James Williams' character

Heinz Klaus Strick has added another 8 biographies to his Collection of biographies: