This song appears to be sung as a grace before meals at many camps, by Girl Scouts, by church youth groups. It was one of a handful of songs we sang standing at our tables in the mess hall before eating. I thought it had probably been written by a parson or school teacher a hundred years ago and passed along.
But a quick search finds that, like yesterday's song, it was composed by professional songwriters. In this case, the team of Kim Cannon and Walter Kent wrote it for a Disney short on Johnny Appleseed in 1948.