One of the biggest names in the dirt bike craze that hit the US in the 1960s was Hodaka. The history of this Oregon-based company is complex, unlike its products: it was a Japanese-American joint venture, was owned by Shell Oil at one point, and towards the end of its life attempted to purchase Fuji Heavy Industries. Hodaka disappeared at the end of the 1970s, leaving a legacy of lightweight and competitive trail bikes—with names such as Combat Wombat, Super Rat, Dirt Squirt, Road Toad and Thunderdog.
The Strictly Hodaka website covers the marque well; the picture above shows a 1973 Hodaka Combat Wombat owned by Bob Fredette, and below is a 1960s Hodaka Short Tracker owned by ex-racer Max Good. [Thanks to Debbie Daugherty for the tip.]