ASPEN was established by Joe Sinclair in 1990 as the publishing arm of his company, Container Marketing Ltd. which had successfully published and marketed his book Refrigerated Transportation two years earlier.

ASPEN has since published six books, four of them written by Joe Sinclair.  It has also helped several writers to publish books under their own or other publishers' imprints.   Joe has also written a further three books under the imprints of other publishing houses.

The experience he has gained, both in writing and publishing, as well as in marketing the books that ASPEN has published, makes him eminently qualified to help others to self-publish and to teach them how to market their own works.

ASPEN has also been the publisher of several house magazines, journals, and newsletters, both  "paper" and  on-line versions.  This was previously on behalf of others, in some cases commercial enterprises,  and sometimes charities.  ASPEN has now taken the decision to publish and print its own magazine, Nurturing Potential, incorporating the ideas and features, as well as the knowledge and experience of the many colleagues and friends who have been involved in these activities in the past..