(BELOW/下) TOP: 1950s AMERICAN OPTICAL
MIDDLE: 1950s AMERICAN OPTICAL
BOTTOM: Late 1940s BAUSCH and LOMB
(BELOW/下)
TOP: 1950s SHURON
MIDDLE: Late 1940s SHURON
BOTTOM: Late 1940s BAUSCH and LOMB
(BELOW/下)
TOP: 1960s AMERICAN OPTICAL
MIDDLE: 1950s TITMUS
BOTTOM: Late 1950s BAUSCH and LOMB