Throughout 1958, Grünenthal placed 50 ads in medical journals, sent out 200,000 letters to doctors and commissioned 50,000 printed materials with over 20 different image motifs.
At this point, the sales of Contergan for Grünenthal continued to be modest.
Source: Anklageschrift (indictment) from 1967, today archived at the National Archives of North Rhine-Westphalia in Duisburg, Germany (Rheinland Division, Gerichte Rep. 139, No. 1–396), p. 61.