The Boise Cascade Company is an American manufacturer of wood products and wholesale distributor of building materials, headquartered in Boise, Idaho, that in the mid-1960s developed an even more diverse portfolio including ownership of a motor home manufacturer, a cruise line, involvement in real estate and recreation projects, and an acquisition in the engineering and construction business for major utilities. It makes total sense that, where possible, the Zodiac Killer would source his newspaper cuttings from the publications that he bought regularly, from within stories that caught his eye, or had some relevance to him. What interested me, was that Boise Cascade dealt in real estate, bearing in mind the sister communication to the Pines card.
Mailed on July 13th 1971, the Zodiac Killer designed the Monticello card, which virtually mimicked the Pines card in every way. It was created with directions to pinpoint the burial site of Kathie Snoozy in the Monticello neighborhood of San Jose, where her and Debra Furlong were murdered on August 3rd 1969. Spelled Kathy Snoozy in the newspapers, she was the namesake of Kathy Bilek, who was the focus of the Monticello card that read "Near Monticello Shought Victims 21 ...... In The Woods Dies April". Kathy Bilek was murdered near Monticello, in Saratoga, in the woods on April 11th 1971. The Zodiac Killer was now claiming all three victims in light of the recent arrest of Karl Francis Werner, who he was calling a "phony" because of having Snoozy & Furlong taken away from his claimed "Aug" victim count in the Dripping Pen card. But where would the Zodiac Killer have sourced the pasted text for the Monticello card that was relevant to his reading material and location - and considering the possibility he may have used phrases rather than single words to design the card?
The only "dies April" combination I could find, was again, relevant to another crime associated with the Zodiac Killer. Kathleen Johns claimed she was abducted by the Zodiac Killer on March 22nd 1970, near Modesto. She stated that the man took her on a 1 1/2 to 2 hour journey around the outskirts of Tracy, California. The only newspaper article I could find of any relevance was from the Tracy Press on March 31st 1971, nearly two weeks prior to the murder of Kathy Bilek. It told of negotiations between Southern Pacific Railroad and the Railpax corporation, and the discontinuation of valley Daylight trains. Although not ideal, it is close enough to the timeframe to be considered a possibility. I suppose, when the Monticello card surfaces (if ever), we will see whether any of the above examples have promise. But what is important: is that all the cuttings sourced have some significance to areas of Zodiac activity.