For many years, Robert Michael Pyle’s “The Butterflies of Cascadia” has been my go-to reference guide for any non-moth lepidopteran seen in my beloved Pacific Northwest. However as this book is now out of print with even used copies selling for double its original cover price – and unread ones classifiable as “new” well over $100.00 – I can’t very well recommend it to those seeking a guidebook to the area’s species.