He wrote papers and a book on the history of mathematics.
For instance, the word function probably expresses the most important idea in the whole history of mathematics.
He wrote several essays on the history of mathematics, especially set theory.
Fascinating history of German mathematics and physics from 1880s through 1930s.
Vaschenko-Zakharchenko is also known for working in the history of mathematics.
He is an expert on the history of mathematics from the 17th century to modern times.
In his later years, he turned to the history of mathematics and science.
Around 1830 or 1840 as I recall, though the history of mathematics isn't my long suit.
His Elements is the most successful textbook in the history of mathematics.
It was the first specialized journal in the history of mathematics.