Where could one find their old yearbook pictures?

Check your high school alumni association for old copies. Go to the school website, or check Facebook and MySpace for possible groups associated with your school -- especially Facebook. Commercial reunion sites like classmates.com and reunion.com are a possibility as well, but they will charge to put you in contact with old classmates.

This writer got one in less than 24 hours. An old classmate (reached through classmates.com) scanned it and sent it by email. However, if doing it again, he would use the free options first.