Half-hours of travel at home and abroad
Half-hours with American History
Half-hours with American history
Half-Hours with American History, Volume 2
Half-hours with the best American authors
Half-hours With the Best American Authors Vol. II
Half-Hours with the Best American Authors, Volume 3
Half-Hours with the Best American Authors, Volume 4
Half-Hours with the Best American Authors, Volume 1
Half-hours with the best foreign authors