Bad story about Arecibo being heavily damaged by a broken cable. #astronomy https://t.co/P4ei2zb4jo

— JF Ptak (@ptak) August 12, 2020

from http://twitter.com/ptak
on: August 11, 2020 at 11:19PM

COVID-19 deaths in the U.S. are equal to about 6% of all US military deaths since the beginning of the country.

— JF Ptak (@ptak) May 11, 2020

from http://twitter.com/ptak
on: May 11, 2020 at 01:24PM

A bad ad–the optically-challenging bit on HB Stowe's "My Wife and I…" in "American Agriculturalist" for 1870. #books pic.twitter.com/gz7ooDtJsd

— JF Ptak (@ptak) April 6, 2020

from http://twitter.com/ptak
on: April 06, 2020 at 10:05AM

Another nice aviation cutaway from "Popular Mechanics" 1937–the China Clipper. There's a nice round-the-world aviation map to go with this showing fueling stops at Wake, Guam, Midway–a peep into why those unheard-of places would be major news in 6-7 years. #aviation #dataviz pic.twitter.com/U5ZmQktIWK

— JF Ptak (@ptak) February 28, 2020

from http://twitter.com/ptak
on: February 28, 2020 at 09:59AM

Book cpovers/dustjackets using a hand motif: #books #bookstore pic.twitter.com/ZGvUeq32DP

— JF Ptak (@ptak) February 5, 2020

from http://twitter.com/ptak
on: February 05, 2020 at 10:08AM

"Russland", a nasty piece of Nazi propaganda. #WWII #Russia https://t.co/k9KMrkTjYr pic.twitter.com/DFSPG63vdx

— JF Ptak (@ptak) February 5, 2020

from http://twitter.com/ptak
on: February 05, 2020 at 09:58AM

Very little is held back in this diatribe by Rep. Clare Hoffman against the Commie-ridden CIO. The America-Firster Hoffman also fought the polio vaccination program beginning in mid-50's (Commie-ridden), & etc., and worked badly w/Ds+Rs alike in his 30 yr House career. #books pic.twitter.com/3dGHG7AfCO

— JF Ptak (@ptak) January 16, 2020

from http://twitter.com/ptak
on: January 16, 2020 at 09:59AM

The "beneficial exercise" of walking the Trail of Tears, Winfield Scott, 1838. ("…“…strong men, women, boys and girls, not only capable of marching twelve or fifteen miles a day, but to whom the exercise would be beneficial.") #NativeAmerican https://t.co/pE6OdHGlzj pic.twitter.com/FJiSNluOTL

— JF Ptak (@ptak) December 10, 2019

from http://twitter.com/ptak
on: December 10, 2019 at 10:08AM

A little groundwork (sorry!) on the history of the idea of floating cities (in the sky). #architecture #histstm #cities https://t.co/dVqjGld6HJ pic.twitter.com/AN1mdTXhcq

— JF Ptak (@ptak) December 9, 2019

from http://twitter.com/ptak
on: December 09, 2019 at 02:37PM

Flying from London to India at 93 mph–cross section/cutaway from "Popular Mechanics" March 1928. #aviation #dataviz https://t.co/rTliweFbg6 pic.twitter.com/gthHCxLRmG

— JF Ptak (@ptak) November 26, 2019

from http://twitter.com/ptak
on: November 26, 2019 at 11:15AM