Hewitt bequeathed his entire collection to the University of Ulster.
At his death in 1945 he bequeathed his book collection to the University of Wisconsin.
Their estate, valued at $200,000, was bequeathed to the University of Kansas.
He bequeathed his estate to the University of Uppsala.
The prize was financed by the revenue from his Kislingbury estate bequeathed to the University.
He bequeathed his private library and his papers to the University of Exeter.
On his death in 1936 he bequeathed his collection with an endowment to the University of Saskatchewan.
Built in 1860 and bequeathed to the University in 1962, it is the oldest building on the campus.
He bequeathed his papers to the University of Pennsylvania.
On his death, his collection and library were bequeathed to the University of Oxford.