With the appearance of dedicated lanes, new rental companies and bike sharing over the last decade, it may seem like bicycling in San Francisco has only been a more recent emphasis.
But a long ago photo says that is not so. Deep in the MTC photo archive is a San Francisco Convention and Visitors Bureau picture extolling the virtues of San Francisco's then new bike route network.
The picture has no date, but judging from one model's Marcia Brady-inspired knee socks and the other's golf-style plaid pants, we are confidently guesstimating it's from 1971.
Good to see San Francisco was setting the bike trend so long ago; it's stuck around longer than the plaid pants trend.