Before this book came across our proverbial desks we never really thought about bicycle headbadges. The tiny addition to your bike headset kind of gets lost in the grand scheme of everything else about the bike, but it shouldn’t. These little works of art generally predate car badges, and collecting them feels like a cooler version of stamp collecting. Which brings us to Jeff Connor, a biology professor from Michigan with an obsession for headbadges. After hooking up with the design studio Carter Wong, Connor’s collection of headbadges was turned into this, A Cycling Lexicon. It’s 400 gold-leafed pages of bicycle art that calls out the craftsmanship and details that, for the most part, went unnoticed until now.