Lake Hopatcong Jefferson Highlights will host a free Open House at the Camp Jefferson Amphitheatre on Saturday, June 25, from 10 a.m. to 2 p.m. This Open House will be an opportunity to purchase tickets for the Summer Concert Series which features only professional national touring performers including Beatlemania Again, Queen, Springsteen, Bon Jovi, Journey, and Johnny Cash tribute concerts, as well as Billy Hector. Visitors will receive a free discount food coupon for the concerts with each adult or senior ticket purchased in advance. Special season ticket and group rates are available this season and children age 9 and under are admitted free at all concerts with a ticket holding adult. Concerts run on Saturday evenings at 8 p.m. from July 16 through Aug. 27. For information visit www.jeffersonhighlightsconcerts.com.