October 1994–February 1995
First logo was simply black text in Times New Roman font. It was later changed.
March 1995–2009; 1997–present (East Asia)
In March 1995, the Yahoo logo was changed into what is the most well known version of it.
This logo first appeared on the headquarters and on Yahoo! Messenger, but it wouldn't come into full effect in 2009 when the site received a revamp. The slogan used at that time was "It's Y!ou". It is still used on some portals. As of 2013, this is now being used as a secondary logo.
From August 7 to September 4, Yahoo! was cycling through 30 different logos, with the finalized logo expected to launch on September 5.
In 2013, Yahoo! premiered an entirely new logo. This was a finalized logo after 30 days of changing its logo.