In the 1970s, a series of books has been published.
The series was published during the period 1949 to 1986.
The series was first published in 1985 with a set of 30 stories, and there are now over 300.
The first series, under Thomas was published from 1973 to 1988.
They have no family names in the game, as when the series of short stories were first published.
The series was a commercial success, eventually being published three times per month.
The third and last series was published in October 2006.
Table 2shows some of the major series published to date on this subject.
As of 2009, three series are published under this general title.
The first series was published in December 2008 and ran for six issues.