We don't have databases specifically of retail and chain store POS data, such as are available from NPD. However, our market research databases will often have sales data by retailer or by category.  Try:

• Statista
• eMarketer
• Passport

You also can sometimes find references to NPD information in articles found in Factiva or ABI/ProQuest, or in analyst reports in LSEG Workspace.

For more resources, see the Baker Library Retail Research Guide.