Need Help Remembering a Book

That's not it, as the one I'm looking for was written some time in the 1800's. Although, I looked up Dispaches from Pluto, and will add it to my TBR pile.

Not British, but Frederick Law Olmsted wrote an account of traveling through the 1850’s South for the precursor of the NY Times. Chronicled in Tony Horwitz’s book Spying for the South. Maybe this?

Took me three days of googling, but I've found it :

An Englishman's travels in America : his observations of life and manners in the free and slave states.

Amazon Link

quote:

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I just read through the New Orleans section. Wow.

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Don't leave us hanging. What did he say?

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The heat, although the summer was not far advanced, was excessive, and the thousands of mosquitoes that filled the air, especially after a fall of rain, when they seemed to burst into life in myriads spontaneously, kept up an increasing annoyance. At night this was ten-fold, for notwithstanding the gauze awnings, or bars, as they are called, which completely enveloped the bedstead, to the floor of the room, they found admittance with pertinacious audacity, and kept up a buzzing and humming about my ears that almost entirely deprived me of rest. This unceasing nuisance in the hot season, makes it difficult to keep one's equanimity of temper, and has, probably, much to do with that extreme irascibility shown by the southern inhabitants of the American continent.
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This portion followed the section addressing the horrors of slavery and the prevalence of shady characters. So, pretty much what you'd expect, but vivid language.