Early examples of Searle's colour work are a treat. There aren't too many examples but they crop up occasionally like this one on Flickr. For the article ‘Christmas at Longleat - 70 years ago’ by the Marchioness of Bath. From The Sketch Christmas Number, 1951.
Searle was so prolific I've found there's always more work to discover. In the book I have two finished versions of a drawing of a 'Miami couple' (Holiday magazine, December 1963). Recently on eBay a sketchbook page cropped up with studies on both sides where Searle seems to have experimented with both angles.
Many of the drawings from the Holiday magazine spread were republished in the book collection 'From Frozen North to Filthy Lucre' (1964).