WGBY is a division of WGBH; a PBS affiliate located in Springfield, Massachusetts. Its launch was on September 26, 1971.
Visuals: On a black/blue gradient background, an outline of "WGBY", in Helvetica and colored translucent gray, fades in. A white bar slides down inside it, coloring much of the text. "S P R I N G F I E L D" fades in below in white.
Technique: 2D computer animation.
Audio: None.
Availability: Can be seen on locally-produced shows from WGBY from the era.
Visuals: The logo starts with "WGBY" above "SPRINGFIELD" towards the bottom right corner taking place on a hill with a tree on the left. The leaves turn from green to yellow/orange (like a transition from spring to fall), and leaves blow to the right.
Variants:
Technique: Basic 3D animation and fading effects.
Audio: A piano jingle. The longer version uses a theme made with an electric and acoustic guitar. The last 4 notes resemble that of the PBS theme.
Availability: Seen on WGBY programming in the early 2000's.
Visuals: Against a black background, the WGBY logo in steel blue is seen. Since 2010, a logo resembling the standard "WGBH shadows" logo is used. Above the logo is "A" and below it is "Presentation". The logo shines.
Variants:
Technique: CGI.
Audio: A gentle acoustic guitar riff with shimmering sounds in the background.
Availability: Can be seen on WGBY programs, such as Autism: Coming of Age.