Ernest Radford, Dictionary of National Biography (1901)
“ Halswelle was then known as an artist whose inclination was either to paint from the life or to seek subjects in poems and pages of history. Latterly he made a reputation as an excellent landscapist. An exceptionally beautiful work of this period, a painting in oil of the Thames above Maidenhead, was included in (Sir) Henry Tate's gift to the nation, and is now in the Millbank Gallery. In 1884 some views of the Thames, recalling 'Six Years in a Houseboat,' were shown by themselves in London. A book on the subject, which bears the same title, was from the artist's pen. ”
