The photography of Rob Gibson has been seen by millions of people in such movies as "Gettysburg," "Cold Mountain," "National Treasure," and the just-released "Harriet."

His skills are in demand by producers and directors looking for authentic, period-correct photos of actors in films covering historic topics.

He now lives in Gettysburg, Pa., and is originally from Lockport. He was in Pembroke on Tuesday night to give a public demonstration on his tintype photography techniques in the jr./sr. high school library.