A group of school children were doing what looks to us like the Mobot and Usain Bolt pose at sports days in the 1940s or 1950s.
They were attending a boarding school called the Royal Wanstead School in what is now the Snaresbrook Crown Court, where these pictures are on display.
At the time, the charity's patron was The Queen Mother who frequently attended events at the school and so may well have witnessed the scenes in these pictures.
The Royal National Children's Foundation now supports more than 300 vulnerable children at 100 independent and state boarding schools throughout the UK.
The current patron The Princess Royal last year launched the Assisted Boarding Network which encourages local authorities to consider boarding schools as an alternative to taking many children into care.
The campaign is also supported by Education Secretary Michael Gove and his Labour predecessor Lord Adonis who was supported at boarding school by RNCF. The RNCF chairman Colin Morrison was himself a boarder at the Royal Wanstead School, though a good few years after these pictures were taken.