By Vilhelm Pedersen 1873. Source: Chenero

By Elisabeth Jerichau Baumann 1873

Original manuscript for The Little Mermaid.
Source: Odense City Museums

For copyright reasons please see Disneys Little Mermaid here.

See Also the illustrations of The Little Mermaid by Edmund Dulac and Arthur Rackham. They are placed on the site SurLaLune Fairytales.