Threescore years and ten: - Reminiscences of the late Sophia Elizabeth De Morgan : to which are a...

Sophia Elizabeth De Morgan (1809-1892) was the wife of the mathematician and logician Augustus De...

The fame of Augustus De Morgan (1806-1871), a brilliant mathematician and logician, has been ecli...

Sophia Elizabeth De Morgan (1809-1892) was the wife of the mathematician and logician Augustus De...

From Matter to Spirit - The result of ten years'experience in spirit manifestations. Intended as ...

Memoir of Augustus De Morgan is an unchanged, high-quality reprint of the original editionof 18...

A Budget of Paradoxes is an unchanged, high-quality reprint of the original editionof 1872.Hans...