TIDE FOUNDATION: Overview Tides Foundation & Tides Center When is a foundation not a foundation? When it gives away other foundations’ money. Most of America’s big-money philanthropies trace their largesse back to one or two wealthy contributors. The Pew Charitable Trusts was funded by Joseph Pew’s Sun Oil Company earnings, the David & Lucille Packard Foundation got its endowment from the Hewlett-Packard fortune, the Charles Stewart Mott Foundation grew out of General Motors profits, and so on. In most cases, the donors’ descendants manage and invest these huge piles of money, distributing a portion each year to nonprofit groups of...