The postage stamps of the 1950s and 1960s, from all over the world, are full of hope for the future. There are Soviet rockets, Nigerian stamps showing "the peaceful use of outer space," and Israeli paeans to industry.

The amazing Karen Horton has been posting a set of her mom's old stamp collection on Flickr, and it's like a window into a future that never was. Here are our favorite stamps from her set, that depict space exploration or technology in a hopeful — not to mention insanely cool — fashion. Check out the rest, and bigger versions, over at the link. [Karen Horton on Flickr]

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Soviet rocket ship

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Nigerian stamp — peaceful use of outer space

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Romanian stamp — Early Bird

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Dutch postage stamp — cooling towers

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Polish postage stamp

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Germany/DDR postage stamp: electronics

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Romanian stamp, space exploration

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Israeli stamp celebrating aviation

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Israeli stamp celebrating aviation

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Bulgarian stamp — space ship

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Iraqi stamp, air mail

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Indonesian postage stamp: trains

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Romanian postage stamp: telegraph

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

Spanish postage stamp: Brussels expo 1958

Beautiful postage stamps from the "Mad Men" era celebrate spaceships and progress

British Solomon Islands: International Telecommunication Union centerary