Anons, the Federal Procurement web page has a wealth of information. The Reports section includes the Top 100 Vendors for every Federal department in separate documents by FY with each department as a separate sheet within the document (tabs at bottom).

Who'd a thunk that the #1 tippy top vendor for the Treasury Department in FY2011 would be …….

Coins 'N Things????

https://www.fpds.gov/fpdsng_cms/index.php/en/