If you really want to recreate the famous song, you'll have to cross over the Mystic River in Medford and head for the house that still stands at 114 South St. When Lydia Maria Child wrote the song, as part of the book, Flowers for Children, in 1845, she was recalling her childhood visits to her grandfather's house there.
Today, Child, herself born in Medford in 1802, is recalled, if at all, just for the song. But that was hardly the sum of her life. Child was an abolitionist and women's rights activist (she thought the two were linked - white men kept both blacks and women subjugated) ; her Appeal in Favor of that Class of Americans Called Africans was one of the first abolitionist books published in the US, and she later became editor of an anti-slaver newspaper.
She also fought for the rights of native Americans. And she was a novelist and poet who also found time to run a school in Watertown.