A couple of books with lots of pics are The Contemporary Blacksmith, by Dona Meilach, ISBN 0-7643-1106-9, Gates, furniture, lighting, etc...
And Decorative Antique Ironwork, by Henry D'Allemagne, 0-486-22082-6. Scissors, locks, sign brackets, lots more. Many items from centuries gone by.
Though the later may be out of print, it is often available used. Try ABE bookseller or Alibris. I got it for 8 bucks.