Hanssen then began to secretly videotape his sexual encounters and shared the videotapes with Horschauer. Formal orientation programs consist of lectures, videotapes, and written material. Weckl has released a series of instructional videotapes. Commercial videotapes and magazines containing child pornography were also found in his home. Commercial videotapes and magazines containing child pornography were also found at his home. It helps an instructor teach different literature genres and incorporate videotapes, films, and television programs. At the time, the NTSC broadcast was recorded on many videotapes and kinescope films. Both sought to provide answers in the journals and videotapes, but investigators found them lacking. Other merchandise included comic books, computer games, and videotapes. Freddie cleverly videotapes them and plugs his camcorder into the iWeb Awards screen. The show spawned a number of aerobics and workout videotapes. This proved problematic since the videotapes were often riddled with technical difficulties. The original 625-line master videotapes of the serial were wiped around 1975. Walter ambered his Harvard Lab and all of the videotapes. The original 625-line PAL videotapes were wiped for reuse in the mid 1970s.