Mayor Vincent C. Gray (D) will make an announcement Wednesday morning about a special event for city residents Aug. 23 in connection with the upcoming dedication of the Martin Luther King Jr. memorial.

The Gray administration worked with the MLK Memorial Foundation to create the event, a city official said.

The announcement is being made at 10 a.m. at the memorial site on the Mall, part of a news conference where local officials will discuss preparations for the memorial’s dedication.

The $120 million memorial will open to the public Aug. 22, launching a week of events that includes luncheons, dinners, concerts, a public exposition and prayer service.

The memorial-- a 30-foot, 8-inch granite sculpture of King--will be covered back up on Aug. 26 to prepare for the dedication, where President Obama is scheduled to speak and entertainers Stevie Wonder and Aretha Franklin, among others, are scheduled to perform.

Also that week, the District will dedicate its new Martin Luther King Drive, which will connect parts of Southeast Washington to the memorial site.