For other related logos and images, see:
Walton's Five and Dime
The Walmart founder Sam Walton named his first store Walton's Five and Dime. The name changed due to a lease of a previous franchise expiring.
Walmart (first era)
Sam Walton named his new stores Walmart. The Walmart name was presented in just about any front/style available to the printer.
Wal-Mart Discount City
1968–1970 (primary), 1970-1973 (secondary)
1970–1973 (primary), 1973-1975 (secondary)
Though this logo had been used as early as 1964 on storefronts, it didn't become the standard corporate logo until 1975 (later to be tweaked two years later). It was first used in print as the corporate logo on November 24, 1975.
In mid-1977, the hyphen was largely modified.
In 1981, the Wal-Mart logo changed color to brown, the "Discount City" logo was completely dropped, and the font was changed as well. This was reused in Canada in 1994 which was colored blue to match its American counterpart, until it switched to its usual logo in 2001.
In 1992, Wal-Mart changed the logo color to blue and replaced the hyphen with a star. This logo is still in use on semi-trucks and at many locations as hundreds of stores are being transitioned to the newest logo. The yellow 'spark' was introduced in September 2007 on semi-trucks and the company's website, as well as the slogan and light blue color; however, the new wordmark was not introduced until a year later.
Walmart (second era)
A new font was first used in late 2008. It was decided that only the W would be uppercased and the rest would be lowercased. The spark, slogan, and color were kept intact.