Details
Link below to George Mason papers containing original document in the Library of Congress collections. Randolph's draft was reproduced in facsimile in William Montgomery Meigs, The Growth of the Constitution in the Federal Convention of 1787 (Philadelphia, 1900), 317-24. Link to online edition of Meigs for Oxford users: https://babel.hathitrust.org/cgi/pt?id=mdp.39015005907590;view=1up;seq=330.
It was reproduced again in facsimile with accompanying transcriptions by William Ewald and Lorianne Updike Toler in their article "Committee of Detail Documents," p. 264-285. According to William Ewald in "The Committee of Detail," this draft "has a good claim to be the first draft of the Constitution, stricto sensu. It is almost entirely in the hand of Edmund Randolph, with annotations by John Rutledge" (p. 220).
Consource transcription (from Farrand): http://www.consource.org/document/draft-sketch-of-constitution-by-edmund-randolph-1787-7-26/.
We’ve dated this document to 27 July, 1787 based on William Ewald’s judgment that “there can be no doubt that Document IV [Randolph’s draft] dates to late July, for it incorporates the ‘Connecticut compromise’ of July sixteenth” (Ewald, Committee, 221).