Disagrees with recent theories of Creighton E. Gilbert (see <i>AATA</i> <b>20-654</b>) concerning the type of scaffolding used by Michelangelo, and the chronology of the project. Examines documents and primary sources relating to the construction and use of the scaffolding, including a sketch by Michelangelo and another by Bramante for S. Peter's showing <i>sorgozzoni</i> using Michelangelo's example. -- AATA