From a couple of Swamplot readers come images of the Little House at 610 Allston St. and a neighboring vacant lot. They’re the lone holdout properties on the block also bounded by 6th St., Yale St., and the Heights Hike and Bike Trail. The 5-story Alexan Heights apartments are going up on the entire rest of the block — including a 50-ft.-wide sliver to reach around and hug the 2 wouldn’t-sells (at right in the photo at top and the one directly below):