A third-generation Californian who has roots in both the southern and northern parts of the state, David Boulé has a lifelong fascination with the history, culture, achievements, and uniqueness of his home state. For decades he has scoured the country in pursuit of items and information relating to the California citrus industry. A career in marketing communication has given him particular interest and insight into how the orange helped enhance the image of California. His collection includes historic photographs, hundreds of postcards, rare advertising and marketing materials, books, newspapers and press clippings, records, posters, journals, and personal papers, along with many California orange-themed souvenirs and promotional items. Materials from his citriculture collection have been featured in several museum and library exhibits, and he has frequently lectured on the topic.