Some local area stores

West Music (Instrument rental, sales, repairs, various musical accessories, some music, has Suzuki   materials) 1398 Twixt Town Road, Marion, IA
(319) 377-9100
www.westmusic.com/locations/cedar-rapids-marion

Reck Violin Shop (Instrument rental, sales, repairs, various accessories)
Clocktower Plaza
1801 2nd St. #110, Coralville, IA
(319) 351-8374
www.reckviolin.com

Schultz Strings (Instrument rental, sales, repairs)
1756 1st Ave. NE, Cedar Rapids, IA
Office (319) 895-8484  Mobile (414) 412-614
www.schultzstrings.com

Eble Music (Most any sheet music needs) 
115 South Linn Street, Iowa City, IA
(319) 338-0313
www.eble.com

Some online places (for discount strings, accessories, cases, sheet music, etc.)
sharmusic.com (Shar Music) 
www.swstrings.com (Southwest Strings)
www.young-musicians.com (Young Musicians, Inc.)