E. Mertens & Cie (possibly)
License, verbatimPD
The Rijksmuseum, Amsterdam: image designated Public Domain (Public Domain Mark 1.0) in the museum's own Linked Art record.
E. Mertens & Cie (possibly). Brouwerij en dranklokaal van G. Ehrhardt, Hildesheim, 1880 - 1900. Rijksmuseum, Amsterdam.