Scientistâs treasure trove and personal objects to go to Science Museum and Cambridge University Library The acquisition also includes Hawkingâs letters and personalised wheelchairs. Photograph: Lucas Jackson/Reuters The acquisition also includes Hawkingâs letters and personalised wheelchairs. Photograph: Lucas Jackson/Reuters Wed 26 May 2021 17.00 EDT A vast treasure trove of papers and personal objects belonging to Stephen Hawking, from dizzying black hole theories to scripts for the Simpsons, have been acquired for the nation. It was announced on Thursday that Hawkingâs archive and the contents of his university office have been acquired through the Acceptance in Lieu scheme, which allows families to offset tax.