Wow, Nice find on the 66 bronco. Now put your name on the list to purchase the new 2021 bronco. I think it may be available in the same color light blue. What a sight that would be to have them parked side by side in your garage.
Figure out exactly what the head badge says and start googling. Also put all the info on this thread and you will probably get more help. I have looked , but I am not 100% on all the correct info on the badge.
Scott, The Black Beauty Bicycle from the teens was made by the Haverford Cycle Co in Haverford Pa. very close to Philadelphia. The decal on your frame looks like the monogram reads H C Co. Philadelphia ?