Note: In kanji:
(a) Kōzō SASAKI 佐佐木 更三 (1900-1985; in 1964 he was 日本社会党副委員長 and 衆議院議員 (Take notice: Shinzō Abe 安倍 晋三: the same "zō")
日本社会党 Japan Social Party (JSP; 1945-1996 when, following the 1995 election loss, name was changed to 社会民主党 Social Democratic Party (SDP))
Tomiichi MURAYAMA (村山 富市 (1924- ; JSP 委員長 1993-1996; prime minister 総理大臣 1994-1996)
(b) Hisao KURODA 黒田 寿男 (1899-1986; 衆議院議員 (1947-1972)
The Japanese pronunciations for 寿 and 久 are "kotobuki" and "hisa" respectively (their respectively Chinese pronunciations are close to present-day Chinese (Mandarin and dialects)).