I was puzzled so waited for the next good night and tried again. Again visually I could not see the third star as in Mike's photo. So I switched to my C8 and could then faintly make out the third star. A few nights later I tried with my C9.25 and it was more obvious. With averted vision it started to pop out like that seen in the photo. I guess this indicates the visibility limitations in my sky here south of Philadelphia.
Is that third star an actual companion? Maybe those making the CDSA had the same magnitude limitations ... hard to believe. My Skytools 3 software lists it as a triple with the C component separation as 28.2 arc sec and magnitude 11.59. The software only indicates easy detectablilty for my C8 and greater aperture. I should make better use of that software.
Here is my second sketch (reverse image since I was using a diagonal). I am just starting out sketching so please forgive some mis-alignments and lack of directional information.
Any similar experience?