The books are very old, so the scan is not perfect, and black-and white. Still I am sure the teachers will find them useful. Maybe someone has these or other books by H.D.Howe (he has them about 60) and will share them.
I have only four parts out of six.
Book 1 46,9 MB
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Book2 65,1 MB
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Book3 76,5 MB
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Book4 71,8 MB
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