As the Preservation Research Office team conducts its architectural survey of the O’Fallon neighborhood of north St. Louis, it has noted the presence of several intact historic brick alleys. Paved with “paver” bricks made by local manufacturers in the last 19th and early 20th centuries before the rise of concrete street paving, brick alleys are part of the built landscape of the neighborhood — and the city. Unfortunately brick alleys have disappeared along with brick streets. O’Fallon is fortunate to have some remaining in good repair. Those shown here can be found in the H-shaped alley network between Fair, Green Lea, Clay and Penrose streets.