This is the very hard to find Shell Method Series Volume #1 containing methods 1-400! This is the American Natural Gasoline Edition that belonged to the Shell Denver Library! It is labeled as copy #1617 which you can see on the distribution list is for the Denver Library. The binder says methods 1-400, but there are tabs and pages for up to 1300, and some of the dates range from 1964 to the 1970's, there is nothing in the 800 tab. The very last page has a small tear and a crease. Size is 8x10 inches. Heavy.
This comes from a huge collection of a long-time Shell Oil employee & collector, there are many one of a kind items that we will be listing just as soon as we can!