NBC

1954–1959
On January 1, 1954, a xylophone and mallet started being used for the logo, with the now-iconic three tone "GEC" jingle. Contrary to popular belief, the keys were not meant to represent the initials of the network's eventual owner, General Electric Company (GEC).

1956–1975


On May 22, 1956, NBC started using a new logo for their color programming. The first logo showed the "wire" feathers of the peacock fanning out into color feathers (colored in red, orange, yellow, green, blue, and violet), accompanied by a majestic orchestral tune. The original peacock is a lucky find today. In 1962, the network changed the logo, and this new variant was known by many as the "Laramie Peacock". It was shown on a kaleidoscopic background as a softer, woodwind-based, tune played, while the NBC peacock fanned its feathers and then transformed into the logo from before. This logo was accompanied by a voiceover which narrated, "The following program is brought to you in living color on NBC."

1959–1975
By 1959, a new logo, dubbed the "NBC snake," rendered the chimes obsolete. This logo is most famous for its vanity cards (also dubbed the "NBC Snake") that appeared at the end of programs NBC produced during this period.

1976–1979


This logo, nicknamed the Trapezoid N, was first unveiled in October 1975 and premiered on-air on January 1, 1976.

1979–1986


The peacock returned in this logo, which is shown with (above) and without (below) the stylized "N," and with the color green replaced with indigo. The version without the "N" was rarely seen after 1980. It is nicknamed the "Proud N."

1986–present


A new simplified logo created by Chermayeff & Geismar was introduced on May 12, 1986 during the finale of NBC's 60th Anniversary Celebration special. The peacock now has only 6 feathers in the colors yellow, orange, red, violet, blue, and green, and is now facing the right.

2011–2013
On September 13, 2011, NBC altered and modified their logo slightly to feature bevels and gradients on it. Other aspects of the 2009 graphics package remained intact.

2013–present


On September 30, 2013, NBC altered and modified their 3D logo. The wordmark has a different font.