This album is the bonus 10" and number 13 in the Lactamase series. If you collected all 12 records in the series (Tony Conrad/Edward Ka-Spel, Rick Reed, Stimulus, Aranos, Miroslaw Rajkowski, Vas Deferens Organization, Noise-maker's Fifes, Charalambides, Troum, Whitelodge and Coil), you were able to submit all 12 coupons (1 collected in each of the other 10"s) and receive this as a bonus.