<b>1910 Bruxelles, Rue Neuve, 92</b> Advertising here in May 1910. <b>1912 Bruxelles, Rue de la Grande Île, 14</b> Advertising here in April 1912. In 1921, "Royal Photo" was active at Chaussée de Waterloo, 13. It is not proven that these three instances are connected.