Lee,
The Ballerina III that Charles Lickliter had at the '61 Nats, is still one of the most beautiful airplanes that I have ever seen. It would win Concours today.
I have the plans that were sent to me by Charlie about 15 years ago. And also some recent plans. It thankfully, was published in Flying models a few ago, and the article has a close uo of the incredible cockpit.
While the plans show a small view of the "Bird Cage" type canopy, only the "Ballerina I" actually had that along with cheeks. The same "Ballerina III" drawing side view shows the bubble canopy.
The Ballerina III that Charlie flew at the '61 Nats and another that he had with him, had the bubble. I have never seen a Ballerina III with the "Bird Cage"
I highly recommend getting the I-Beam building video that Bill Werwage and Bob Hunt made.
The video shows the bellcrank mount just aft of the spar, instead of through the spar as in many of the old I-beam drawing showed, and spar tripplers where the bellcrank slot is in the spar. This prevents the I-beam failures that we saw in the early days. I-beamers were very secretive in those years, and many details were left out of the published drawings.
Here is a slide that I took of Charlie at the '61 Nats
There was a Ballerina thread in the Classic section, some time last year, that has more pictures.