Born in the U.S. to British parents, Rowland Hilder moved to England with his family at the age of 10, studied at Goldsmith’s College School of Art — where he eventually returned as a professor of drawing — and went on to become one of the UK’s most popular watercolor artists of the 20th century.
Hilder also painted in oil and occasionally used pastel and acrylic, but is known primarily for his watercolors of the English countryside. These were often augmented with pen and ink and gouache. Hilder, along with his wife, artist Edith Hilder, he also did illustration for a number of well known campaigns. At times, they collaborated on the same paintings.
Like Constable, Hilder’s images are so evocative of a particular region, in this case in the rural areas of Kent, that it has become associated with his name as “Rowland Hilder Country”
Examples of Rowland Hilder’s work on the web are a bit scattered. The largest I’ve found are on One1more2time3.3 Weblog. The largest selection, though the images aren’t large, is on ArtNet (note the link at the bottom to “Load More”, this goes on for 10 sheets or more).
There is currently an exhibition of Hilder’s work in the UK, Roland Hilder – The Working Artist at The Historic Dockyard Chatham, on display until 29 November 2015.
There is a well-reviewed instruction book by Hilder with many reproductions of his paintings: Painting Landscapes that you may be able to find used under its previous title, Expressing Land, Sea, and Sky in Watercolor.
There are also other out of print titles, Starting with Watercolor,; Rowland Hilder Country: An Artist’s Memoir; Rowland Hilder’s England; and Sketching Country (links are to Amazon US, Amazon UK here).