Pre-Anniversary help, please??

I've been going over one line of text in the 1919 version of the manual, and though I should  know what it says by now, I'm stumped. As far as I can tell, the sentence (pp.57-58, lesson 9) reads:

 This organization stands for service and this spirit is shown in all its deals and in the opinion of this ..... work in which it always pays to give satisfaction at any price.

I'm stumped about what the outline between 'of this' and 'work' is. Could anyone take a guess? Am I totally off on what I've guessed for the rest of the sentence?

Thanks for any help!

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