These books were produced by one of the first commercial refrigeration system manufacturers there were being that this was published in 1930 and includes an entire parts book it's amazing that it's in this good of condition for anyone in the refrigeration trade to have something as antiquated and killer condition is this would definitely be a great conversation piece it is possible that some of these units are still out in the world working the type of refrigerant used in them had been obsolete for decades I cannot say enough about how rare and valuable these are please take a look at the pictures and ask any questions thank you
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