Letter (hand-written) A.P.Ershov applies to the addressee according to Prof. Perlis' advice. He writes about his forthcoming trip to England, hopes to visit the Teddington Laboratory and to meet Dr. Wilkinson and his colleagues. Date: 20.10.1958 Original document language: English Authors: Andrei Petrovich Ershov Organizations: NPL Persons: Alan J. Perlis Addressee: John Wilkinson