| Gustave Le Gray Maneuvers, Camp de Châlons [Album "Souvenirs du Camp de Châlons"] 1857 Albumen print 27.1 × 36.1 cm (image/paper); 52.7 × 63.7 cm (album page) Art Institute of Chicago Major Acquisitions Centennial Endowment, Reference Number: 1995.130.12 LL/112767
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