Holy cow: penetrating power of 16.5" shell from 110-ton gun–Scientific American, May 1896. pic.twitter.com/DphATgeWLa
— JF Ptak (@ptak) January 22, 2021
from http://twitter.com/ptak
on: January 22, 2021 at 02:52PM
Interesting and scarce document relating to #Austria, #WWII, 1944. #books https://t.co/DG46OVwC7t
— JF Ptak (@ptak) September 10, 2020
from http://twitter.com/ptak
on: September 10, 2020 at 01:40PM
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