They might be wrong, but Pollstar has this on their site:
Thu 06/17/10 “Telluride Bluegrass Festival” Telluride Town Park (Telluride)
Josh Ritter
Keller Williams
Sarah Jarosz
The Dave Rawlings Machine
Fri 06/18/10 “Telluride Bluegrass Festival” Telluride Town Park (Telluride)
Imelda May
Leftover Salmon
Sat 06/19/10
Hot Rize City Park (Telluride)
“Telluride Bluegrass Festival” Telluride Town Park (Telluride)
Edward Sharpe & The Magnetic Zeros
Sun 06/20/10 “Telluride Bluegrass Festival” Telluride Town Park (Telluride)
Carolina Chocolate Drops
+++++++++++++++++