Answered By: Edward Bilodeau Last Updated: Oct 07, 2016 Views: 49
Start with Mergent Online. Search your company and then view their financials. Some companies will report their advertising expenditures.
See also the LexisNexis Redbooks. Search for your company and then view their advertising expenditures by various media.
Use Ad$pender to approximate the advertising expenditures of particular brands or products.