Tracing St Christophers and Captain Alan Roderick Williamson (Roddy)

I am trying to contact anyone who was in Hong Kong in the early 1960's who knew of St Christopher's Orphanage and/or my adoptive parents, Captain Alan Roderick Williamson (Roddy) and his wife Patricia Anne Williamson (Pat). I would like to receive any photos of them and/or with me as a baby. Sadly they have both passed on. They both had very fond memories of their posting in Hong Kong, Singapore and Malaya and the friends they made. I am putting together a photo album as a memento to those early years for my own use (not publication).