The Authors Guild Model Trade Book Contract is a classic and invaluable reference guide. (authorsguild.org)
The following resources are static websites that are not necessarily updated on a daily basis but are still invaluable reference points for investors [see also Three ETFs To Cure a Gold Hoarding Addiction]. (commodityhq.com)
As an investor, I find the first half of the book in which Mr. Swensen discusses asset classes to be invaluable reference source. (canadiancapitalist.com)