1877 color photograph of Agen made by Louis Ducos Du Hauron. This improved print was made in the 20th century from the original negatives.

1877 color photograph of Agen made by Louis Ducos Du Hauron. This improved print was made in the 20th century from the original negatives. Louis Arthur Ducos Du Hauron (1837 – 1920), Public domain, via Wikimedia Commons