Special Bulletins are occasional publications on specific topics.
Although the first suggestion of this approach in a medical journal dates back to 1989, there were only occasional publications on the subject in the next decade.
Currently, VR in the Schools is an occasional publication, usually published only in electronic form.
In 1972 the first volume of an occasional publication, the Goodwin Series, named after the founder of the Society, was published.
An occasional publication has resulted from work done at the program.
It has from time to time issued other occasional publications, including memoranda on good practice; and conference proceedings.
In geology circles, Shideler was well known for his fossil collections, occasional publications, and professional activities.
They believed that occasional publication of an official journal, with information on how members voted on legislative matters, would be sufficient to keep the public informed.
Over the years they have issued occasional publications reprinting important texts and disseminating historical documents and images.
Beyond 1910, the company released occasional publications under the name of J. D. Potts.