To dream of a photo album represents nostalgia or remembering something from your past. Thinking how things used to be. It may also reflect your impression about a big or complicated situation.
Example: A young man dreamed of looking at a photo album and seeing his ex-girlfriend getting married. She looked very happy next to a groom whose face he could not see. In waking life he was starting to flirt with his ex-girlfriend again and was remembering how she fell for someone else while they broke up.