List of best-selling albums in the United States
The following is a list of the best-selling albums in the United States based on RIAA certification and Nielsen SoundScan sales tracking. The criteria are that the album must have been published (including self-publishing by the artist), and the album must have achieved at least a diamond certification from the RIAA. The albums released prior to March 1991 should be included with their certified units only, as their Nielsen SoundScan sales are not complete.
Source: Wikipedia — List of best-selling albums in the United States (CC BY-SA 4.0)