David J. Foulis
... that a calculus textbook by David J. Foulis was used as a prop in The Sure Thing?
... that a <a href="./Calculus" id="mwCC8" rel="mw:WikiLink" title="Calculus">calculus</a> textbook by <b id="mwCDA"><a href="./David_J._Foulis" id="mwCDE" rel="mw:WikiLink" title="David J. Foulis">David J. Foulis</a></b> was used as a prop in <i id="mwCDI"><a href="./The_Sure_Thing" id="mwCDM" rel="mw:WikiLink" title="The Sure Thing">The Sure Thing</a></i>?