1991-261, Tandem IQ (Ideal Quota) trial pack of vitamins and minerals as used in the Darland High School Nutritional Supplementation and IQ trial, by Trufree Health Products (Larkhall Laboratories), London 1989-1991. 1991-244/2, One of six packets of `Junior Vitachieve’ multivitamins and minerals, designed as an IQ increasing dietary supplement, endorsed by the Dietary Research Foundation, made by Healthcrafts (Booker Nutritional Products Ltd.), Byfleet, Surrey, 1991. Blue background.