Captain Marvel was once upon a time in the 1940's a superhero more popular than Superman, though Superman is the obvious victor over time (and a long time at that). I don't know what Captain Marvel is ...

Wischnegradsky, J [Vyshnegradskii, I. A.] . Sur la theorie generale des regulateurs. In: Comptes Rendus de l'Académie des Sciences de Paris, Vol. 83, 1876, p.318-320, (translated here: On the General ...

These wonderful images of the aurora borealis occurs as plate 4 and a text illustration on page 113 in Amedee Guillemin (1826-1893) and edited by Silvanus P. Thompson (1851-1916), the lovely ...

Rare, scarce, interesting, and unusual books for sale, mostly in the history of physics, math, and technology. The bookstore site is part of a larger daily blog for the History of Holes, Dots, Lines, ...

Here's the lead on a short post I made a few years ago on a Dublin tour: I just came across these image that I made on a trip to Dublin some years ago. Carrying the bags for my wife, Patti Digh, who ...

The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, conducted by David Brewster, Richard Taylor, Richard Phillips, and Robert Kane, volume XVIII, January-June 1841, and ...

I found this patent for a rather extraordinary bicycle--a unicycle, actually, and a massively-wheeled one, at that. Looks to me as though the wheel of the unicycle might be eight feet tall, with the ...

At point point in 1944, there were 4,890 American B-17s in service (as part of an overall artime production of 350,000 aircraft). This is what 4,890 B-17s might look like: ...

Self- and purposefully-deceptive belief in spectacular and unsupportable scenarios espoused by governmental leaders which affect the lives of hundreds of millions of people deserve their own ...

Tiles by Sparta, published by the Sparta Ceramic Co., East Sparta, Ohio, 1940. (Can I say "Sparta just one more time?) 11x8.5", 64pp, illustrations throughout the publication, several in full and ...

So this is a loose-and-pulled-thread post--I bumped into something that led me somewhere coming face-to-face with an interesting reference to an unusual "first" in the history of cartography. I found ...