Here are some of the various Groundbreaking Aircraft that I have photographed in my travels to airshows and museums.
1903 Wright Flyer (and 12+ replicas)
The famed 1903 Wright Flyer at the Smithsonian NASM (and replicas from around the world)
Curtiss NC-4
Curtiss NC-4 "First to cross the Atlantic" at the Naval Aviation Museum at NAS Pensacola
North American X-15 (multiple)
North American X-15 examples at the Smithsonian NASM, NMoUSAF and McMinnvil...
Rutan Model 76 Voyager (muliple)
Fuselage of the famed Rutan Model 76 Voyager in Oshkosh, and a replica at Seatac Airport
Spirit of St Louis (and Ryan replicas)
Spirit of St Louis at the Smithsonian. Also Spirit of St Louis display in Oshkosh and Ryan replicas at the Evergreen Museum and Oshkosh