Herbert Ellsworth Slaught -... en.wikipedia.org

Herbert Ellsworth Slaught... mathshistory.st-andrews.ac....

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Herbert Ellsworth... www.tandfonline.com

Amazon.com: Herbert... www.amazon.com

Amazon.com: Herbert... www.amazon.com

5161wlsfyhL._AC_UF1000, ...... www.amazon.com

Solid Geometry: With... www.amazon.com

Plane and solid geometry :... archive.org

Solid Geometry: With... www.amazon.com

Amazon.com: Herbert... www.amazon.com

Elementary algebra :... archive.org

The American Mathematical... www.amazon.com

History of The American... maa.org

Þe "Herbert Hoover"... braddelong.substack.com

Herbert_Lightfoot_Eason.jpg... en.wikipedia.org

Solid geometry, with... archive.org

Herbert Hill / SamePassage samepassage.org

Herbert Hill / SamePassage samepassage.org

Lee, Herbert (1912–1961) www.blackfacts.com