Could this be the first ad for absinthe in the USA? From NYC in 1805.
Source: New York Mercantile Advertiser March 6, 1805

This could be one of the earliest advertisements for absinthe in the USA (transcribed below). It was taken from the New York Mercantile Advertiser dated March 6, 1805. It is as follows:

I've been doing some research into absinthe imported to the USA prior to the ban. I found a few I never heard of. Please find the running list below. If you have any info on Richard and Muller or Yersin & LeCoultre, please let me know.

I started a discussion here if you have any comments:

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Pre-Ban Absinthe Imported Into the USA (running list)

Richard and Muller (Swiss)
Source: The Daily True Delta 1859 NOLA

Bulletin of pharmacy, Volume 11
1897

The following is a from a book written by Lewis Ford called The variety book containing life sketches and reminiscences. Written in 1892. It was in the personal library of the family that made Butterfly Absinthe in Massachusetts.

Absinthe history continues...

Boston University Law Review, Volume 1
1922

ABSINTHE, a liqueur or aromatised spirit, prepared by pounding the leaves and flowering tops of various species of wormwood, chiefly Artemisia Absinthium, along with angelica root (Arcftanyelica oßminalis), sweet flag root (Acorus Calamut), the leaves of dittany of Crete (Origanum Dictamnus), star-anise fruit (Illicium anisatum), and other aromatice, and macerating these in alcohol After soaking for about eight days the compound is distilled, yielding an emerald-coloured liquor, to which a proportion of an essential-oil, usually that of anise, is added.

The following is an entry from a British pharmaceutical journal dated 1869.

Pharmaceutical Journal and Transactions
By Pharmaceutical Society of Great Britain 1869

ABSINTHE.
Much has been written lately in the daily press and medical journals on the effects of absinthe drinking, now becoming so general among all classes in France. The following article first appeared in the ' Pall Mall Gazette ':—

Why was absinthe banned?

This is a question that I get asked all the time. My stock answer is that nobody knows for sure and that the answer varies from country to country.

Here are some theories on why absinthe was banned in France:

1. Before absinthe peaked in popularity, daily production levels were about 90 gallons a day. When it peaked, it shot up to 5,000 gallons a day. Distilleries had trouble meeting demand as some unsavory distillers cut corners and used low-grade alcohol that created health concerns.

Swiss Absinthe: The First Absinthe?