2000, USSR/USA, STS-97 on the way back letter sent from the ISS and delivered to Earth by the American Space Shuttle Endeavour (STS-97). The letter was written by cosmonaut YURI GIDZENKO and addressed to his mother-in-law; handwritten message included. Aboard the station the cover and the text of the letter were marked with the "ISS" octagonal board souvenir seal and the "Expedition 1" round board souvenir seal. Only 18 letters were delivered to Earth from the ISS by the American Space Shuttle Endeavour (STS-97). Included are the certificate of authenticity signed by cosmonaut Yuri Gidzenko and the A.I.E.P. certificate of authenticity. It was the last Space Mail sent from Space to Earth in the 20th Century as well as in the 2nd Millennium!