BATTER UP! You like Los Angeles. You like baseball. Unhand your hot dog and brew and pick up a new copy of "Los Angeles's Historic Ballparks" from Arcadia Publishing. You know Arcadia as the house that puts out all of those look-back books, volumes packed with interesting and rare pics. This one, of course, looks at all of the diamonds that popped up around town decades ago. Gilmore Field! Wish we could revisit for a day. Chris Epting -- he's the author of "Marilyn Monroe Dyed Here" and all of those great pop culture/location guides -- is the man behind the book. PLAY BALL: "Ballparks" debuted in April; it's $21.99 from Arcadia Publishing.