Crude drawings(like Bleeding knife letter)...looks like possible double postage, and looks like San Fran postmark. There are dates plastered on the pages of 1968 & March 1969, both of which are BEFORE the name Zodiac was ever mentioned. So how do these come to be in the FBI's Zodiac files? I dont see any mention of threats or the name ZODIAC anyplace in the letters. I do see some similar features to Zodiac, candy cane F, not enough of it printed in my opinion too much in cursive