A Thomson Reuters press release tells the tale:
Toronto, Canada, Aug. 4, 2010 – Thomson Reuters today announced the acquisition of Canada Law Book, a division of the Cartwright Group Limited. Canada Law Book will be aligned with Carswell, a Thomson Reuters business headquartered in Toronto. Terms of the deal were not disclosed.
Canada Law Book produces publications across 36 topics of legal information, and is known for having high editorial standards, as well as authors who are among Canada’s most prominent legal scholars.
...Carswell and Canada Law Book each brings more than 100 years of legal tradition and expertise to customers, and together provide the recognised excellence, integrity and highest editorial standards that ensure legal practitioners, judges and academics receive the most comprehensive materials for their practise.With the nation's two leading legal publishers now about to operate under one roof, one wonders whether the end result will be fewer legal publications, fewer writers being published, and the bottom lines playing a more decisive role than ever in determining the materials that are ultimately made available to the legal profession.
And needless to say, it wouldn't be much of a surprise if, not so long from now, another press release announces that these two publishers have been folded into one.