Periscope Entertainment was created in 2004.
Periscope Life was created in 1980.
Down Periscope was created on 1996-03-01.
Up Periscope was created on 1959-03-04.
a diagram of a periscope
someone discovered the periscope
Streetsweepers Entertainment was created in 2000.
Lightstorm Entertainment was created in 1990.
Backbone Entertainment was created in 1992.
Grandslam Entertainment was created in 1987.
Funky Entertainment was created in 1979.
Entertainment Building was created in 1993.
HIT Entertainment was created in 1989.