The things that were normal before feel abnormal these days. As you may know it was quite conventional to immortalize a picture about a dead relative in the 19th and 20th century. People were willing to have a last memory about a person who was left this world behind. The pictures were often taken together with a family where the deceased was among the living and these pictures were also displayed. Even people who wasn't rich invited a photographer to home. Nowadays the people photograph their dead relatives quite rarely and it would be macabre to see the picture about the dead on someone's wall. There is several reasons why people have forgotten the habit as urbanization, wars and the death is institutionalized. Nowadays people don't see their dead relatives because the professionals are taking care of them. The death is kind of a taboo and we want to remember our loved ones as living.
Why I'm talking about the subject is this interesting art book which I bumped ages ago and eventually wanted to have it into my own book self: Beyond the dark veil: Post Mortem & Mourning photography from the Thanatos Archive.
The book contains old quality vintage photographs about the people and also about the animals. There is interesting stories behind these pictures for not all demises were natural.
My own favorite is the picture about Kellers: Three in one casket because that hides a shivery story. A woman killed her husband due to his misconduct, and their baby, and in the end herself. And in spite of all they were buried together. That's odd!