Can give advice on correct period framing for your old photographs and artwork And can often date your old photographs by identifying the process of or tracking down the period of operation of the photographic studio
A historian is a person who specializes in the study of history, and who writes books and articles about it. someone who studies history, or the history of a particular thing art/literary/military etc historian
A person who writes or compiles a chronological record of events and investigates and interprets the past by researching original sources like objects, photographs, letters and other documents to find out more about individuals and groups of people