Testimony and depositions from those in the motorcade who were carefully selected by the Warren Commission to testify. The record is not complete, as many motorcade participants were avoided. The author provides hyper-linked background and analysis on all material.
Master Chronology Appendix XI: 'Motorcade Participants' provides a collection of mainly W.C. testimonies, but also H.S.C.A., from persons involved as passengers in the first seven vehicles of the presidential motorcade. As is usual in this excellent series, Walt Brown provides a fully annotated collection of valuable data, complete testimonies and depositions from the W.C. and H.S.C.A. volumes.
For anyone studying this topic I cannot recommend the Master Chronology strongly enough. I have found these publications to be invaluable. My reading time of two weeks on this Appendix was due to breaking off mid way through and studying other parts of this Chronology to write articles for a U.K. journal. With the M.C. I have discovered so many untruths published in the JFK assassination literature. Onward to XII.