Warsaw Pact troops' invasion in Liberec on 21 August 1968. Photo by M. Mělnický

Warsaw Pact troops' invasion in Liberec on 21 August 1968. Photo by M. Mělnický

Warsaw Pact troops' invasion in Liberec on 21 August 1968. Photo by M. Mělnický

Singer and guitarist Jiří Korn with his band Rebels on Lubomír Peške's photo / 1968

Věra Hrabáková (second from the top right), national team at the 1968 Mexico Olympics

Věra Hrabáková (second from the right) with her teammates at the Olympic Games in Mexico, 1968

Children Hana (*1965), Věra (*1967), Monika (*1968), Růžena (*1971), Karel (*1978)

Sasha with his younger brother Yuri, parents, grandparents in a city park, Pokrovka, 1968.

Jan Matějíček (first from the right), cross-country running in the military service, 1968

Jan Matějíček (no. 188) during cross-country run in the military service, 1968

Alfred Neudörfer (centre) during his university studies in Pilsen with his colleagues, 1968

Arnošt Vlašimský on duty at Klínovec, invasion of Warsaw Pact troops, August 26, 1968

Ján Bačkovský during his visit to Neuville, France in 1968, unveiling of the memorial to the killed

Golden Kids before the start of Music Box No. 1, 1969

Photo board from the 9th class, the witness in the middle, carrying a kettle to the stove

Stretnutie evanjelickcýh farárov v Liptovskej Porúbke v roku 1968, Jozef Juráš v druhom rade vpravo

Růžena Hrňová (front left) and her sisters at their mother's 70th birthday celebration. 1968

The Czechoslovak volleyball representation at the Olympics in Mexico, 1968. Elena Moskalová bottom line, third left.

Coach Bohouš Rázl and teammates Tomáš Kučera and Ladislav Rygl at the Winter Olympics in Grenoble 1968

Ladislav Rygl (second from the bottom right) at a training camp in Rožnov pod Radhoštěm in 1968

Bohumila Řešátková (left) at Prague Castle in 1968 during a meeting with Prime Minister Oldřich Černík

Zlatica Dobošová (far right) with her first husband K. Stretti (in uniform) - 1968

Radomír Vítek with his twin brother Milan and his parents Řehoř and Anežka / around 1968

Friends - dog handlers, military service, Tři Sekery near Mariánské Lázně, ca. 1968

At the Border Guard, hidden post, Tři Sekery near Mariánské Lázně, ca. 1968/1969