- American Science & Surplus
- Ampeg
- Fred Armisen
- The Autumn Defense
- Avenue N Guitars
- Betsy Stirratt
- Big Briar
- Breedlove Guitars
- Carr Amps
- Cassandra Jones
- Chicago Lighthouse for the Blind
- City Lights
- Cycling 74
- D'Addario Strings
- Dalkey Archive
- DATA.org
- Dextro
- Doctors Without Borders
- Drag City
- Electrotone
- Emerging Improvisers
- Evans Drumheads
- Exact Change
- Fensler Film
- Forced Exposure
- Fulcrum Point
- GiGi's Playhouse
- The Ganzfeld
- Handsome Family
- Headcount.Org
- The Hideout-Chicago
- Hoffman Guitars
- J.C. Lind Bike Co.
- Intelligentsia Coffee
- Korg
- Glenn Kotche
- LAD Design
- Lampo
- Lark Street Music
- Latin Percussion
- Lileks.com
- Make n' Music
- MASS MoCA
- Mastery Bridge
- Montuoro Guitars
- Nels Cline
- New Orleans Musician's Relief Fund
- Odd Job Jack
- On Fillmore
- Open City
- Oxfam - America
- Perishable Records
- Planet Waves
- The Preservation Resource Center of New Orleans
- Protest Records
- Schroeder Guitar Repair
- Signal to Noise Magazine
- Small Press Distribution
- Harry Smith
- Seymour Duncan
- Souldier Straps
- Synth Museum
- Sonor Drums
- Ubu
- Via Chicago
- Voter Registration
- Vox Amps
- Wes Dooley
- Wilco Base (the Timeline)
- Wilco Club - En Espanol
- Willie's Guitars
- The Woody Guthrie Foundation
- Jim Woodring
- World Bicycle Relief
- Zildjian
- ZT Amplifiers
