There is only one original    SOURCE    to 25,000 retailers The Source Book is an invaluable publication for advertisers, enabling them to reach almost 25,000 retailers from across many retail sectors - from gift shops to garden centres and heritage outlets to department stores - for a surprisingly low cost. This handy A5 buyers' guide is published twice a year - January and July - to coincide with major product launches. Publication Dates January/Spring Issue Published Jan 1st  Advertising Copy Deadline December 5th This issue is an ideal advertising vehicle for those companies exhibiting at the following major trade fairs: July/Autumn Issue   Published July 1st Advertising Copy Deadline June 10th This issue is an ideal advertising vehicle for those companies exhibiting at the following major trade fairs: