| ID | Interpret | Skladba | Album | |
| 31. | Dive Index | Dive Index: Sole Fisherman | Insomnia Radio: Daily Dose |  |
| 32. | Kelly D. Brownell, David S. Ludwig | The Rudd Report: The Glycemic Index | Yale University | |
| 33. | Business Intelligence Network | Gauging Your Firm's Leadership Culture Index | Audio Article | |
| 34. | Alex Wunschel | Blick 151 auf ÖVP iReport : Social Media Index : Köbberling | Tellerrand | |
| 35. | Chris Scott | 150 UK Wine Show 150 Kive-ex and index with James Miles | UK Wine Show | |
| 36. | Gene S. | AMIR Crackpot Index: Alternative Medicine Version | http://www.theshallowgenepool.com/podcast amir.htm | |
| 37. | Gene S. | AMIR Crackpot Index: Alternative Medicine Version | http://www.theshallowgenepool.com/podcast amir.htm | |
| 38. | Chris Scott | 150 UK Wine Show 150 Kive-ex and index with James Miles | UK Wine Show | |
| 39. | Mark Yeandle interviewed by Alexander Osterwalder | Mark Yeandle on the Global Financial Centres Index | podcast series privatebankinginnovation.com | |
| 40. | Dj.Gonzales | Retro Classics MINDEN SZOMBATON AZ INDEX CAFEBAN V�RUNK NY�REGYH�Z�N! | | |
| 41. | METAL Injection Guerilla Radio: The Entropy League | Neaera / Slayer / Misery Index / The Absence / God Dethroned / Cryptopsy / Dragonlord | Episode 54: Absent | |
| 42. | Various Speakers | Conflict Prevention and Resolution Forum: The Global Peace Index: Its Value and Implications, and the Next Steps | Johns Hopkins SAIS Events - Summer 2007 | |
| 43. | Alex Wunschel | Blick 178 ARD-ZDF-Onlinestudie, Playboy-Verlosung, Twitter Brand Index und Facebook-Gangster | Tellerrand | |
| 44. | President George W. Bush | President Bush Visits Iowa City, Iowa, Discusses Aid for Flooding - June 19, 2008 | Presidential Speeches & Remarks | |
| 45. | Relatively unknown today, the Iowa Flag Song was adopted in 1949, when the legislature paused for poetry and a performance. | Iowa Archives: The Iowa Flag Song | Iowa Public Radio | |
| 46. | 48 years after the Communist leader visited Iowa, the gift Nikita Khrushvhev left behind has been rediscovered. | Iowa Archives: Khrushchev's Gift to Iowa | Iowa Public Radio | |
| 47. | Dar Williams | Iowa | Falcon Ridge Folk Festival 2007 |   |
| 48. | Dar Williams | Iowa | Falcon Ridge 2008 | |
| 49. | Dar Williams | Iowa | Falcon Ridge 2008 | |
| 50. | Dar Williams | Iowa | Mortal City | |
| 51. | Danny Flanigan & The Rain Chorus | Iowa | Live Lunch | |
| 52. | Danny Flanigan & The Rain Chorus | Iowa | Live Lunch | |
| 53. | Green Angel | Iowa | | |
| 54. | danny flanigan and the rain chorus | iowa | live lunch | |
| 55. | Eleni Mandell | Iowa City | Country for True Lovers | |
| 56. | Home Grown Tomatoes | Iowa Ioway | Picked & Preserved | |
| 57. | We focus on old radio and TV recordings in the latest Archives story, courtesy of our friend Jeff Stein | Iowa Archives | Iowa Public Radio | |
| 58. | Eleni Mandell | Iowa City | Country for True Lovers | |
| 59. | pino the frog | iowa altar | all sounds in this track stem from a 1 second 440 khz sine wave | |
| 60. | Billy Murray | Way down in Iowa: Im going to hide away | Edison Blue Amberol: 3113 | |
