I have a neat old book (I think Splintercat does too?) called "Mount Hood -A Complete History" by Jack Grauer. I thumbed through it but didn't see specifically that tower. The book is awesome though, tons of photos from early 1900's of Mt. Hood's pioneers and buildings, as well as stories and stats. I bought it at a Mazama sale, maybe their library has more copies, or other libraries?

Jane Garbisch - Site Sherpa
~~~~~~~~~~~~~~~~~~~~~~~~~~~
"We are here on the planet only once.... might as well get a feel for the place."
- Annie Dillard