Hello David!
Since the photo did not originate with me, I'd direct you to "Dennis":
[email protected] for questions
Get a look at that AMA number!
Do me a favor and all of you who read these posts, Check my blog:
BtnFlyGuy'sBlog
send me your pics and anecdotes regarding the same or "anything" control line during the "golden age", that being up to about 1980 so I can flesh the thing out!.
[email protected]

(No I'm not selling anything, I'm just trying to get your stories before they slip away)
J.troy