I joined this forum merely to ask for help from experts. If this was inappropriate I will apologize now and just go away if no one responds. I do not know anything about photography. I am working on my family's ancestry and have a photo that may be the only picture of my great-great grandfather. I believe it is this person but cannot know for sure without a reasonable opinion on the age of the photograph. It is one of those portrait postcards that Kodak invented in 1880. May I start a thread and ask questions to determine the date either by the card or the clothes and hats in the picture - possibly even post the picture??? Would anyone be willing to try to help me?