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Elementary Algebra for Schools (1885)
http://www.archive.org/details/eleme...lgeb00kniggoog
Higher algebra : a sequel to elementary algebra for schools (1891)
http://www.archive.org/details/higheralgebraseq00hall
Solutions of the examples in Higher algebra (1889)
http://www.archive.org/details/cu31924105225399
Elementary trigonometry (1912)
http://www.archive.org/details/elementarytrigo00hall
Solutions of the examples in Hall and Knight's Elementary trigonometry (1914 [c1905])
http://www.archive.org/details/solut...xamp00hallrich
School geometry (1918)
http://www.archive.org/details/schoolgeometry00hall
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