Being more local ! someone will know or may know someone who knows more on the subject!
http://www.culture24.org.uk/yh000123Try contacting 'Pontefract museum'
5 Salter Row, Pontefract WF8 1BA
Phone:01977 722740
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Try this website & study the top menu (Post on this website)
http://www.knottingley.org/letters/letters_page.htmIts not a lot but here are two links to start you off,
First link - is two lines Jan 3rd 1947 about the national school and Orphanage Knottingley (meaning there was one)
http://www.knottingley.org/history/pastyears/years_1947.htm2nd link is celebrating 140 years of the national schools & orphanages.
http://webcache.googleusercontent.com/search?q=cache:wDqbzOBln-wJ:www.actionforchildren.org.uk/about-us/our-history/celebrating-140-years+National+Children's+Home+and+Orphanage+knottingley&cd=2&hl=en&ct=clnk&gl=uk