#1 Ed Clark (b. 1930) is the author of A New Beginning.
All of the other works so far are listed as by D. Clarke. (Note that the surname is spelled differently.) The split authors for D. Clarke include:
#2 David Clarke, the author of Making Connections
#3 David T.-D. Clarke (David Tyrwhitt-Drake), 1923- the author of Roman Colchester (D. Clarke was a manual entry)