2008 Explorer 1 50th Anniversary QSL Card

2008 Explorer-1 50th Anniversary QSL Card (front)
Front of the 2008 Explorer-1 50th Anniversary QSL Card

This is the front side of the fold-up QSL card from the 50th anniversary of the JPL Explorer 1 mission.

2008 Explorer-1 50th Anniversary QSL Card (inside left)
Inside left of the 2008 Explorer-1 50th Anniversary QSL Card
2008 Explorer-1 50th Anniversary QSL Card (inside right)
Inside right of the 2008 Explorer-1 50th Anniversary QSL Card

This is the left and right sides of the inside of the same QSL card telling about the historic Explorer 1 mission.

2008 Explorer-1 50th Anniversary QSL Card (rear)
Rear of the 2008 Explorer-1 50th Anniversary QSL Card

The rear of the card shows the Explorer 1 spacecraft — the first to be put into orbit by the United States of America.

Then go to the JPL Explorer 1 Mission web page for more detailed information.