Life going on underground has always been very interesting to me--particularly so when a good tech story is accompanied by great art. This is certainly the case with the cover story for the September ...

Thomas Cooper, a merry, upper-educated intellectual called “a learned and talented mapcap” by none other than John Adams, wrote from his secure chair South Carolina College a translation of a rather ...

[George Fred Keck] Green’s Ready-Built Homes Present the Solar Home,The Solar Home. 1944, copyright: Green's Ready-Built Homes, Rockford, Illinois. 12pp. 11.5x8 ...

Marchione di Coppo Stefani was born in Florence in 1336. He wrote his Florentine Chronicle in the late 1370s and early 1380s. [Stefani, Marchione di Coppo.Cronaca fiorentina. Rerum Italicarum ...

John Alexander Henderson. J.A. Henderson's Intellectual and Practical Lightning Calculator, A.L. Bancroft, San Francisco, 1872. First edition. Original wrappers. 7x5", 79pp. Provenance: Library of ...

I have a small collection of 18th and 19th century notebooks--ciphering books, tally books, keepsakes--kept by children and young adults. These books are remarkable for their contents, empty ...

From darkness to promote me?"--John Milton, Paradise Lost (X.743–5) The animated human created by Victor Frankenstein in 20-year-old Mary Shelley's anonymously published Frankenstein, or the Modern ...

And all that appears confusedly on walls is very like the vibration of bells: you can hear in their ringing all the sounds or words you want to imagine." - Leonardo da Vinci 1492 Finding recurring ...

This is a downloadable, clickable image of the makings for a zeppelin paper model--it is a lovely thing, and I just needed to share with anyone with a sharp exacto or a real pair of scissors. Pieces ...

We find this splendid woodcut in the book by Guilelmus Caorsin, Obsidionis Rhodiae urbis descriptio, printed in Ulm by Johann Reger in 1496—it is anonymous, identified only as by the Maitre de Caorsin ...

This paper is one a small archive of background and draft papers and proposals by the Vannevar Bush group working on the question of the control of atomic weapons and the formalization of the American ...

Yes, the heavens are made of circles, somewhat, especially if you were observing a three-dimensional figure in two-space, where all spheres are circles. But here we're making those observations the ...