Dedication of the “Mike Ryan Memorial Baseball Field,” on the very spot he polished the skills that would propel him to the Red Sox, takes place Friday morning in Haverhill. Ryan, a Red Sox catcher during the 1967 “Impossible Dream” season, died two years ago at age 78. His family, friends and fans are expected to take part in the ceremony Friday, July 22, at 10 a.m., at Swasey Field, 59 Blaisdell St. Haverhill Human Services Director Vincent Ouellette told city councilors last year that despite his success, Ryan always maintained a great affection for his hometown. “He came back to this area to live and he often talked about the joy and the fun and where he developed the skills up at Swasey Field,” he said.