Notes on computer modelling of early mathematics by Derek Thomas Whiteside Research notes on D T Whiteside's use of micro-computers in modelling and exploring mathematics of the past. Including a brief preparatory statement (for a lecture?) on the subject, applied to Ptolomaic, Keplerian and Newtonian mathematics and Thomas Harriott's optics and ballistics. With specimen computer print-outs. Derek Thomas 'Tom' Whiteside FBA (1932-2008), British historian of mathematics and authority on Isaac Newton. Adolf Prag (1906-2004) mathematics master and Librarian at Westminster School. Proofreader and commentator on Whiteside's editions of Isaac Newton. n.d.