Courtney and Levi McIsaac have been up in their parent’s attic lately, duly sifting through decades of family debris. 

Their findings read like a set of cryptic clues: a $23 hospital bill for their great uncle Rome’s gut pain. Kodacolor snapshots of their Tocaloma ranch. A  rifle loaded with a single round. A 1970s letter from a congressman to their grandfather Don McIsaac, expressing the government’s interest in purchasing his land.  

“It’s…