2) An Albumen print is a paper base print made from a negative. It was invented in 1850 Louis Désiré Blanquart-Evrard.This form faded away in the mid 19th century.
3) A stereograph is two nearly identical pictures, and when looked at through special glasses will make something three dimensional. They came about in the 1900's and since then have evolved.
4) Carte De Visite is a small photographic portrait. It is typically mounted on a piece of card. Carte De Visite was usually used as a visiting card.
5)Matthew Brady was one of the most appreciated American photographer of the 19th century. He was best known for his documentation of the Civil War, as well as the celebrity photos he took. His early images were daguerrotypes.
5:2) Alexander Gardner was a Scottish photographer who moved to the United States. Gardner is best known for his pictures of the American Civil War, as well as the execution of the people who decided to assassinate Lincoln. He "specialized" at making Large photo prints. A lot of his images were stereoscopic!