The International Instructional Television Cooperative, Inc.

Background
The International Instructional Television Cooperative (ITV) is a nonprofit organization founded in 1973 to develop, produce, and distribute educational shows in the fields of language arts, science, social studies, art and consumer education.

1st Logo (1970's)
Logo: On a black background, a strange-looking logo appears, which consists of a "T" attached to the left of a bracket-like "C". The combination makes it look like a "V" instead. On the "T" is a black "I", surrounded in a outline with the same color as the logo. A dot appears above the "I".

Variants: This is either filmed or videotaped :
 * Filmed: The logo is yellow and the dot is white.
 * Videotaped: The logo is light blue and the dot is.

Technique: Motion-controlled animation.

Audio:
 * Filmed: A synth fanfare with the last note held out.
 * Videotaped: A ding.

Availability: The Book Bird had the filmed logo, while Dragons, Wagons and Wax had the videotaped logo.

2nd Logo (1980's)
Logo: On a black background, we see an rounded rectangle, which inside it has "Times New Roman" in a stylized serif font. After five seconds, an orange dot appears above the "Times New Roman".

Technique: Computer animation.

Audio: A female announcer saying the following: "This station is a member of the Instructional Television Cooperative, ITVC. Whose funding makes this program possible." A popping sound appears mid-sentence.

Availability: So far, it can be seen at the start of a February 4 1986 recording of an Mister Rogers' Neighborhood episode, which was aired at WPNE-TV in Green Bay, a station from Wisconsin Public Television (now PBS Wisconsin). It might probably be seen on other recordings from the era, in which some are unknown yet.