| Gustave Le Gray Maneuvers, Camp de Châlons [Album "Souvenirs du Camp de Châlons"] 1857 Albumen print 28.5 × 33.9 cm (image/paper); 52.8 × 63.7 cm (album page) Art Institute of Chicago Major Acquisitions Centennial Endowment, Reference Number: 1995.130.16 LL/112785
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