A significant obstacle to doing an online search for Fritz Peter is that both Fritz and Peter are common as German first and last names. The German Wikipedia provides some basic pointers, such as his 1923 dissertation in Göttingen.
Arne Schirrmacher, "Establishing Quantum Physics in Göttingen: David Hilbert, Max Born, and Peter Debye in Context, 1900-1926." ...
Sofya Vasilevneya Kovalevskaya is a famous female Russian mathematician:
who made noteworthy contributions to analysis, partial differential equations and mechanics. She was a pioneer for women in mathematics around the world – the first woman to obtain a doctorate (in the modern sense) in mathematics, the first woman appointed to a full professorship in ...
Twenty Female Mathematicians
A data analysis of women's trails among ICM speakers
by Helena Mihaljević, Marie-Françoise Roy
Women mathematicians in France in the mid-twentieth century
by Yvette Kosmann-Schwarzbach
You can search a book in the site
Here you will surely find books on the history of mathematics, and they also hold conferences for secondary school teachers.
This is a book I recommend:
Vite Matematiche, protagonisti del '900 da Hilbert a Wiles, Springer
written by Bocconi professors
Donne nella matematica
Clara Viola, Donne matematiche. (Italian) [Women mathematicians] Matematiche Complementari, 3. Aracne Editrice, Rome, 2015. 83 pp. ISBN: 978-88-548-8037-5
My Italian is limited, but it seems that this collection of biographies of selected women mathematicians (including Maria Gaetana Agnesi and Sophie Germain, among others) is for readers older than 12 ...
I do not know if you ever came across "Remembering Sophia Kovalevskaja" which is a quite curious book written by Michele Audin. It is not "popular" in that the math discussions in the book are at a very high level and it is not "academic" in that the way in which it is written is more towards literary style. A very interesting reading in my ...