What other writings from the Constitutional Convention corroborate or dispute the definition of the duties of electors in Federalist Papers #68?

What other writings from the Constitutional Convention corroborate or dispute the definition of the duties of electors in Federalist Papers #68?

Is anyone here familiar with the details of the Constitutional Convention of 1787 enough to know if any of the actual participants of that event left any writings that either corroboration or dispute the duties of the presidential electors as described in Federalist Paper #68 ? Minutes of the convention? memoirs? personal letters? etc…