It's been 50 years since Yuri Gagarin became the first man to ever orbit the earth in his Vostok spacecraft. Besides, on this day, 27th March 1968, this pioneer cosmonaut died when his training jet crashed. Being a space buff I can't help but feeling nostalgic for this era of cold war giants. Ergo, I like both these t-shirts, the photograph-based one from HBToie and the more stylized one from Futbolko.
There is also this fine postcard from Oleg Tchebunin that commemorates that first legendary flight in a style reminiscent of the social realism artwork from the '60s.