Today The NSArchaeology society gathered a group of members to tour the provincial archives. I was beyond excited. I fondly remember spending hours going through rolls of microfiche researching my ancestors. So much fun! That building is jammed packed with historical items. Vaults of treasures. The Archivists preserve the past events of the province. Trying to preserve the present for future generations. I’ve always been aware of the historical importance, I never realized the importance of present day collection of important information. 
There are many types of photographics. Here’s the different types through the ages and when it was most popular.
Daguerreotype 1842 – 1856
Ambrotype 1855 – 1861
Tintype 1860-1870
Carte de Visite 1860 – 1888
Cabinet Card 1875 – 1900
Dawn's Chronicles 
I never knew the dates of all the photo types. Thanks for sharing.