Historically, the parades were unofficial events and had an air of menace.

There were also five unofficial events played in November and December.

Powell had limited success during the regular phase of his career, but won several official and unofficial events as a senior.

During the years off, an unofficial event was still taking place commonly called Bike Week.

The contest was an unofficial event, but it provided a valuable psychological foundation.

By this time, however, the unofficial event had taken on a life of its own.

A number of unofficial events were held for both amateurs and professionals.

Activity recorded in 1960 included a mixture of 60 official and unofficial events.

It was an unofficial event in 1959 and 1960.

It was an unofficial event in 1974 and 1975.