Albert Bergerac was the most prolific of the early French postcard photographers, printers and publishers.
Early cards have a small roundel A B & Cie Nancy in black or red. In 1905 he merged with two other Nancy printers to form Imprimies Réunies of Nancy or I.R.N. which mainly produced view cards with IRN ususally spelled out in full down the side. At this stage the firms were producing 100 million cards a year.
Bergerac continued to produce "Fantasie" cards for a time with the Bergerat name down the side, particulary in 1905. After WW1 production at Nancy lapsed as newer printing methods took over.