Visit to County Limerick

In a few weeks I shall be visiting County Limerick where my family came from prior to the 1850s. Ive pretty much exhausted the online parish records and have found lots of possibles, so mostly I just want to visit a few likely places and get a feel for the region. But can anyone recommend any local sources that might supplement whats available online? The particular towns my family is associated with were Rathkeale, Feenagh & Kilmeedy, and Charleville across the border with Cork. Sometimes even quite small towns have heritage centres that dip under the radar.