The Bonham Exchange announced Thursday it would close for four to five months to install a fire sprinkler system to comply with a city fire-code requirement. On Thursday afternoon, a representative for the Bonham Exchange said a statement would be released later in the day and declined further comment. The Happy Foundation, the 501(c)(3) nonprofit that oversees the operations of the Bonham Exchange, said financing had been secured but did not immediately say how. It’s housed in a historic building just a few blocks from the Alamo at 411 Bonham St.David Martin Davies / TPR A fire escape at the rear of the Bonham Exchange building. “We want our friends, neighbors, and longtime patrons to hear one thing clearly: the Bonham Exchange is here to stay.