I just got done merging edom_southern_harmony into edom_west (which I just created based on SH1991 hymn #200) and I found these page scans in the Southern Harmony instance (and in the derivative authority): Page Scan Croppings. Not sure how widespread the damage is, but it definitely shouldn't skip two pages like this. And it shouldn't say page four hundred and something for something that is clearly in the 170s.
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Southern Harmony 1835 page scans
This version of the Southern Harmony came from the CCEL website. I think I straightened it out. It looks like they had multiple scans for every page (therefore more images) and a couple conclusions came before their beginnings.