Michael Bollner signed the top photo at the only appearance of all five kids together... it was a special convention.  Though some have appeared elsewhere, this was the only time Peter Ostrum participated and all fiver were together again. Bottom photo of Mr. Bollner taken at the convention.  Obtained through Paris Themmen who was Mike Teevee. Michael Bollner was Augustus Gloop in Willy Wonka and the Chocolate Factory. He got stuck in a pipe after drinking from the chocolate river