Group singing performance in front of a plain wall, likely a 1960s–70s Eastern Bloc cultural event. Mixed-gender choir in coo... Group of women in traditional folk attire performing a circle dance, likely a Bulgarian *horo*, under a decorative metal ring... Vintage black-and-white photo of a mid-20th century outdoor gathering, likely 1950s–1960s. Group of adults and children pose ... Traditional folk ensemble performing outdoors, likely Eastern European . Five musicians in folk attire—fiddles, accordion, fl... Black-and-white group performance featuring a man playing a stringed instrument (likely a bandura) and women in traditional f... Black-and-white photo of a formal flag-raising ceremony at a large, plain concrete structure. Four individuals in uniform rai... Black-and-white stage setup featuring three performers in coordinated costumes (tunics, knee-high socks, sandals) performing ... Mid-20th century formal ceremony at a modernist building with clean lines. A wreath and flagpole with a flag bearing a hammer...