Prominent contributors to this debate include David Walker, James McCune Smith, Frederick Douglass and W. E. B. Du Bois.

Other association members included Walker Lewis and David Walker (abolitionist), who became the organization's spokesman and wrote the 1829 Appeal to colored and white people.

The cast includes Brenda Harris as Agrippina, Nancy Allen Lundy as Poppea, David Walker as Ottone and Kevin Burdette as Pallante.

The extraordinary cast includes two superb countertenors, David Daniels and David Walker; there is also fine singing from Lisa Saffer and Jennifer Dudley.

The enticing cast includes David Walker, Christine Abraham, Phyllis Pancella and James Maddalena.

The first occupant of the Chair (from 1714) was William Forbes, and subsequent notable Professors have included John Millar, William Gloag, David Walker and Joe Thomson.

The strong cast includes Sarah Connolly, Amy Burton, Lisa Saffer, Beth Clayton and David Walker.

William Lacey makes his house debut conducting a cast that includes David Walker in the title role, Gerald Thompson as Guido and Marguerite Krull as Emilia.

Series producers included David Walker (Toronto) and Daryl Duke (Vancouver).

Speakers have included John Bogle, Sallie Krawcheck, David Walker, Abby Joseph Cohen, Henry Kaufman, Niall Ferguson and Neil Barofsky.