> Tony, where do you think it started that a Whitworth
> was with Bledsoe. I always wondered because I knew
> of the distinctive sound and as you stated, no
> primary source reported the unusual sound.
If, as David states, a detachment was taken from Bledsoe to man one of the Whitworth cannons in the Vicksburg defenses, then it's likely that Bearss associated the Whitworth with Bledsoe and therefore wrote it into his account of Raymond in "Grant Strikes a Fatal Blow."
Bearss is the originator of the claim, unfortunately he doesn't recall from where he pulled that information, and the VNMP files on Bledsoe have subsequently been looted (it's my theory that Sandy Berger did it).