OK, I have one... Biplane, square tips, upper wing is noticeably longer than the lower wing, slight forward stagger with lift struts instead of flying wires, Continental 220hp radial, tall rounded rudder with a lot of taper, rectangular stab with rounded tips. Taildragger and fabric covered. I’ll post a photo hint later after you’ve had a chance to guess from the description. Any questions about the design? Not a homebuilt.