Queen's Longest Reign

AS you maybe aware ...
We have some old'ish Queen Books here four pictures from them.
1. This the Queen and the Duke of Edinburgh and their children. Price Charles and Princess Anne. It was used for the 1952 Christmas Card.
2. The Queen and Prince Charles.
3. The Queen and Duke of Edinburgh arrive for their Royal Tour of Canada 8th October 1951
4.The Queen and Duke of Edinburgh, The Queen's tour of Nigeria 27th Jan 1956