One of Vanguard's greatest successes was 100,000,000 Guinea Pigs (1933), an exposé about dangerous consumer products written by Arthur Kallet, who three years later would found the Consumers Union and Consumer Reports magazine.
Unul dintre cele mai mari succese ale editurii Vanguard a fost 100,000,000 Guinea Pigs (1933), un articol despre produsele de consum periculoase scris de Arthur Kallet, care a fondat trei ani mai târziu Uniunea Consumatorilor și revista Consumer Reports.