General Links:
National Carousel Association
Carousels.com
Carousels of New England
Carousel Links
Racing Derbies: 1, 2
Coasters & Carousels
Amusement Park History
Chasing Merry-Go Rounds
Tim Racer (Restoration & Custom Work)

Museums:
New England Carousel Museum (Bristol, CT)
C.W. Parker Carousel Museum (Leavenworth, KS)
The Merry-Go-Round Museum (Sandusky, OH)
International Museum of Carousel Art (Hood River, OR)

More Carousels:
[For a much more thorough list, see this website]
Kit Carson County Carousel: 1, 2, 3 (Burlington, CO)
Cheyenne Mountain Zoo Carousel (Colorado Springs, CO)
Denver Zoo Endangered Species Carousel: 1, 2 (Denver, CO)
Caro-Seuss-el at Universal Orlando: 1, 2, 3 (Orlando, FL)
Six Flags Riverview Carousel (Atlanta, GA)
Lake Winnepesaukah Carousel (Rossville, GA)
Herschell-Spillman Carousel (Story City, IA)
Silverwood Carousel (Athol, ID)
Idaho Centennial Carousel (Rexburg, ID)
Cass County Carousel (Logansport, IN)
Parker Carousel (Abilene, KS)
C.W. Parker Carousel (Leavenworth, KS)
Kansas Carousels
William A. Hines Carousel Gardens (aka City Park Carousel) (New Orleans, LA)
Greenfield Village Carousel (Detroit, MI)
Crossroads Village Carousel (Flint, MI)
Van Andel Museum Spillman Carousel (Grand Rapids, MI)
Great Northern Carousel (Helena, MT)
A Carousel for Missoula (Missoula, MT)
Dream Maker Carousel (Somers, MT)
Canobie Lake Park Carousel: 1, 2 (Salem NH)
Endangered Species Carousel at Oklahoma City Zoo (Oklahoma City, OK)
Tulsa Zoo Wildlife Carousel (Tulsa, OK)
Jantzen Beach Carousel: 1, 2 (Portland, OR)
Oaks Park Carousel: 1, 2 (Portland, OR)
Salem Riverfront Carousel: 1, 2, 3, 4 (Salem, OR)
Prairie Village Carousel: 1, 2 (Madison, SD)
Lagoon Amusement Park Carousel (Farmington, UT)
Alder Creek Pioneer Association Merry-go-round (aka Bickleton Carousel): 1, 2 (Bickleton, WA)
Washington State Carousel (Puyallup, WA)
Ferry County Fair Merry-Go-Round (Republic, WA)
Looff Carousel: 1, 2 (Spokane, WA)

various carousels (Geelong & Melbourne, Australia)
La Ronde Six Flags Amusement Park Grand Carrousel: 1, 2 (Montreal, Quebec, Canada)
Riverside Park Carousel (Guelph, Ontario, Canada)
Lakeside Park Carousel (Port Dalhousie, Ontario, Canada)
Roseneath Carousel (Roseneath, Ontario, Canada)
Paramount Canada's Wonderland Carousel (Toronto, Ontario, Canada)
Centreville Carousel (Toronto, Ontario, Canada)
John Carter's Steam Fair (London, England)
Eiffel Tower Carousel (Paris, France)
Le Carrousel de Lancelot at Disneyland (Paris, France)

Books:
Painted Ponies: American Carousel Art, Manns, et al, 1986
The Carousel Animal, Tobin Fraley, 1983
Grab the Brass Ring: The American Carousel, Hinds, et al, 1990
The Great American Carousel: A Century of Master Craftsmanship, Tobin Fraley, 1994
The Carousel Keepers: An Oral History of American Carousels, Carrie Papa, 1998