English: Box 4, folder 7, item 6, Jeanette Williams Personal and Political Records (Record Series 46930-10), Seattle Municipal Archives.

There was an extensive discussion about this badge at the English-language Wikipedia reference desk. Some of what was turned up:

No indication that the American Heritage Foundation is/was related to American Heritage magazine.

From John F Kennedy Presidential Library and Museum: "American Heritage Foundation - This folder contains materials collected by the office of President John F. Kennedy's secretary, Evelyn Lincoln, concerning the American Heritage Foundation's 1962 "Register, Vote on an Informed Basis and Contribute to the Party of Your Choice" program".

Freedom Train says the foundation was formed in February 1947 with Thomas D'Archy Brophy (of advertising firm Kenyon & Eckhardt) as its president.

User:Khajidha says "I'm not finding too many details about the Foundation itself, but it is mentioned as participating in voter drives as early as 1952 and continuing into the 1960's. (I would estimate the image you have here as from the late 1950s as opposed to your own estimate of late 1960s) And the logo seems fairly unambiguous to me, it is multiple hands holding up the torch of liberty."

A few links (from Khajidha): https://library.cqpress.com/cqresearcher/document.php?id=cqresrre1960092100, https://www.jstor.org/stable/25549455?seq=1#page_scan_tab_contents, https://www.amazon.com/Good-Citizen-American-Official-Publication/dp/B000VYM9CM, https://www.lexisnexis.com%2Fdocuments%2Facademic%2Fupa_cis%2F1520_PapersNAACPPart4Supp195665.pdf&usg=AOvVaw0GtJrU8bBsbsddfYJx7rqW

And from User:Alansplodge: CQ Researcher - Voting in 1960: "A number of private, non-partisan organizations are working to assure a big vote in November. The American Heritage Foundation, in cooperation with the Advertising Council, announced last June 6 [1959] that it would stage an intensive nation-wide advertising drive urging citizens to register and vote, to contribute to the campaign funds of political candidates and parties, and to inform themselves on the issues and work for their chosen candidates".