Over the river, and through the wood,
To grandfather’s house we go;
The horse knows the way,
To carry the sleigh,
Through the white and drifted snow.

Lydia Maria Child (1802–1880) American abolitionist, activist, journalist, suffragist

“The New England Boy’s Song About Thanksgiving Day,” st. 1
    (Source)

Found in Child's book, Flowers for Children, Vol 2: For Children from Four to Six Years Old (1845). Alternate titles for the song include "Thanksgiving Day" and "A Boy's Thanksgiving Day."