Single

• Ben Klaff: Piano/Keyboards (organ on "Bullet Train")
• Billy Corgan: Vocals ; Guitar
• Butch Vig: Production (track 1)
• D'arcy Wretzky: Bass
• James Iha: Guitar
• Jimmy Chamberlin: Drums/Percussion
• Kerry Brown: Production (tracks 2, 3, 5)
• Mike Rubano: Recording ("Terrapin")

• "I Am One" is the Gish version.
• "Terrapin" is a Syd Barrett cover, with James on vocals. Recorded live at Rose Records in Chicago, IL on 06/23/91.
• The Australian version has different cover art.
• In 1994, Virgin licensed the "I Am One" Hut UK CD single for distribution in the US. The CD is almost identical, with only the stock number changing. The biggest difference is in the price: the original Hut CD costs about US $10, the Virgin reissue about US $6.

1. 10": 10 test pressings on black vinyl with plain paper sleeve
   10": 6000 on black vinyl with full sleeve
2. CD: Unknown pressing quantity
   12": Unknown quantity of a test pressing on black vinyl in plain white sleeve
   12": Unknown pressing quantity on black vinyl
3. CD: Unknown pressing quantity; unknown pressing status
4. Unknown pressing quantity