Take a look at:
www.golden-dawn.org/enochianintro.htm
At one time, no one had any particular set of mental associations with the word "Watchtower" - no one, except occultists!
At the turn of the century, there was a highly influencial occult group called the "Golden Dawn". They liked Egyptian
religious symbols and brought back a system of mystical practise called "Enochian magic". This system emphasized
a set of magic spells called "Opening the Watchtower" and prominently used the Tetragrammaton in this incantation.
Some of you have wondered about C.T. Russell's association with the Masons but I think you need to look a little
deeper. Russell picked up a huge amount of occult symbols and esoterica and built his 'Society' around them.
He had pyramids and "pyramidology". He practised "phrenology". The organization came to use terms like "Theocratic
Unity" and the "Golden Age" - which already were associated with pagan/occultist practice. Russell liked the 'winged
globe' as a symbol - and , of course, he choose the term "Watchtower" to identify his group - a capitalized term that
was made prominent by occultists around the end of the 19th century.
There's more here than could be explained by simple coincidence, I think. If you believe in 'archetypes', or anything
psychic, there are some spooky aspects of this religion's origin.
metatron