Publication after a colloquium held in France in 1989 commemorating the 150 years of public disclosure of photography according to the Daguerre process. There are several texts referring to conferences of the following authors grouped by themes:
PHILOSOPHY OF INVENTIONS
Andreas HAUS
A.D. COLEMAN
Jerzy A. WOJCIECHOWSKI
HISTORICAL ASPECTS
Bernard MARBOT
Sylvain MORAND
Mike WEAVER
Italo ZANNIER
Boris Kossoy
Paul JAY
Weston NAEF
Michel FRIZOT
Sylvie AUBENAS
Larry J. SCHAAF
Peter GALASSI
INVENTIONS AND CORRELATIONS
Pierre SCHAEFER
John SZARKOWSKI
Mark HAWORTH-BOOTH
Jean CLAIR
Ian JEFFREY
Hubert DAMISCH
Aaron SCHARF
Alain DESVERGNES