The photo collections contain hardly any images from the period before 1868. It may be assumed that Stork had photographers on the payroll fairly shortly after 1868. The images in the archive however cannot be traced back to individual photographers. Even their names remain hidden in the undeveloped parts of the ‘paper’ archive. Considering the high level of photographic skill as well as the well-chosen contents of the images, this is a relevant subject for future research.