"The first photographic images in the late 1820s had to be exposed for hours in order to capture them on film. The long exposures gave us a few unmistakable Victorian photography conventions, such as the stiff postures and unsmiling faces of people trying to remain perfectly still while their photograph was being taken.

But another amusing convention developed: photographs containing hidden mothers trying to keep their little ones still enough for a non-blurry picture."

Seamless:

http://ridiculouslyinteresting.files.wordpress.com/2012/01/hidden-mothers-1.jpg?w=584

http://ridiculouslyinteresting.files.wordpress.com/2012/01/hidden-mothers-4.jpg?w=416&h=614