Thanks for the information everyone! My grandpa just gave me a pair of model 8s. I love the history behind the company!
Until now I only had the consumer version of their history: My grandpa brought them home for Christmas one year. This would have been late 60s. My mom thought her family was now "up-town" in her words. She talks about how when everyone left the house how she would blast them.
I'm currently working on repairing one of the woofers. The foam has deteriorated. I guess my mom's jam sessions paired with time took a toll on them. I don't think they've been used much in the last 10 years or so. They will be now!