Karpinski
A survey of all mathematics textbooks and their authors published in the USA between 1850 and 1950 (currently not working)
BRETSCHNEIDER
A Zotero bibliography of publications related to quadrilaterals, quadrangles, and quadrigons
A survey of all mathematics textbooks and their authors published in the USA between 1850 and 1950 (currently not working)
A Zotero bibliography of publications related to quadrilaterals, quadrangles, and quadrigons