would suggest that you try and find out which palace you're talking about. I'm guessing that you mean Buckingham Palace (rather than one of the other palaces around the UK that the British royal family use).

If possible, try and get some more information. They see if you can contact the archives team for more information. Giving them as much information as possible. Here's the link that may be useful. Good luck.
http://www.royal.gov.uk/Contactus/ContacttheRoyalHousehold.a...