Intercontinental 707
Today – 600 mile-an-hour four-engine jetliners speed airmail nonstop coast to coast and between continents in a few hours. 1960
Orbital Space Vehicle
Tomorrow – mail-carrying vehicles – boosted into space, gliding to landings at airports – will deliver mail anywhere in less than an hour. 2000
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Master image scanned on Epson 10000 XL flatbed at 600 ppi, 24 bit color, saved as TIFF file. Photoshop used to reduce access image to 600 pixels on long edge; master image file size: 91,117,365 bytes.