This document, designated as Charter 77 Document No. 17 and dated May 23, 1978, in Prague, provides a list of 56 additional citizens who joined the Charter 77 declaration of January 1, 1977. The list showcases the diverse social composition of the movement, featuring individuals from various professions, including workers, technicians, students, clergy, and intellectuals. Key spokespersons at the time—Ladislav Hejdánek, Marta Kubišová, and Jaroslav Šabata—endorsed the document. The archival context reveals that many signatories were subsequently monitored by the State Security (StB), as evidenced by internal notes on the document copies. This report was widely disseminated through samizdat channels like "Informace o Chartě 77" and exile journals like "Listy." It serves as a historical testament to the persistent expansion of the dissent movement in Czechoslovakia during the late 1970s, highlighting the ongoing civilian commitment to human rights and democratic principles despite the inherent risks of persecution by the communist regime.