One of the ways that Wells expressed himself was through his drawings and sketches. One common location for these was the endpapers and title pages of his own diaries, and they covered a wide variety of topics, from political commentary to his feelings toward his literary contemporaries and his current romantic interests. During his marriage to Amy Catherine, whom he nicknamed Jane, he drew a considerable number of pictures, many of them being overt comments on their marriage. During this period, he called these pictures "picshuas".[21] These picshuas have been the topic of study by Wells scholars for many years, and in 2006 a book was published on the subject.[22]