From the Wikipedia: "Morning Dew", also known as "(Walk Me Out in the) Morning Dew", is a post-apocalyptic folk-rock song written by Canadian singer Bonnie Dobson in 1962, that has become a standard."
"Fred Neil heard Dobson's song and re-arranged it to suit his own style. Tim Rose heard Neil's version and then recorded his own in 1966, adding himself as co-writer. Through a loophole in US copyright law, Rose was able to claim royalties."
"The song is most popularly known today as a cover by the Grateful Dead."
No Grateful Dead version here. If anyone has any other good versions, send em to me and I'll post 'em. (You can sample and buy Bonnie's version "Take Me for a Walk" from Amazon)