Henson Associates, Inc.

Logo: There are two main variants of this logo:

Version 1: On a solid beige background, we see ha!, with HENSON ASSOCIATES, INC. in an ITC Avant Garde font below it, and For placed on the top left of it, arranged like this:

Forha!

HENSON ASSOCIATES, INC.

The exclamation point shines from top to bottom.

Version 2:Transitioning from the Marvel Productions logo, the "ha!" from the above variant fades in and zooms out, and when it stops zooming, the background changes to beige gradient. HENSON ASSOCIATES, INC. appears stacked below it, arranged like this:

ha!
HENSON
ASSOCIATES, INC.

Again, a copyright notice appears below.

Trivia:

The logo was designed by David Kaestle and debuted as a print logo in 1975. When the company introduced new stationery that year, the logo was printed twice on the back of the paper so that, when it was folded, the recipient would be greeted with "ha! ha!" The design would also be adapted for other company divisions, including "he!" (Henson Enterprises), "hep!" (Henson Electronic Products), "hi!" (Henson International), "hit!" (Henson International Television), "ho!" (The Henson Organization, Ltd.), "hop!" (Henson Organization Publishing), and "hum!" (Henson Universal Music)
The "ha!" logo is still in use today as the print logo for Henson Alternative.

Variants:

An early version exists of the 2nd version of the logo that had the word "For" next to "ha!" (like the first version).
The Muppets: A Celebration of 30 Years utilized a cut-short version of the later Muppet Babies variant (as to avoid showing the Marvel Productions logo), likely because they lacked another logo to use.

Technique: Scanimate animation.

Music/Sounds: Plays over the ending theme. On The Muppets: A Celebration of 30 Years, we hear Zoot blowing his saxophone.

Availability: Very rare.

It appeared on the first two seasons of Muppet Babies (with both variants being used), but it's usually replaced with a Jim Henson Productions/Jim Henson Television logo. It was however kept when Playhouse Disney UK reran the show in the mid-2000's.
The second variant of this logo is usually preserved on the 1986 special The Muppets: A Celebration of 30 Years.

Logo: On a white background, we see:

HENSON
ASSOCIATES, INC.

with a copyright stamp below in black. The text bears a strong resemblance to the zooming variant of the previous logo.

Technique: None.

Music/Sounds: Plays over the ending theme.

Availability: Only appeared on season 3 of Muppet Babies.

Henson Associates, Inc.

Jim Henson Productions

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