I found a reference to three Swiss absinthe brands from the 1850-60s.

These brands and descriptions can be found in British & foreign spirits: their history, manufacture, properties, etc. By Charles Tovey
Published in 1864.

Gillard, Elise, and Co.— Absinthe, green. Extremely delicate.; character good.
August Lueba.— Absinthe and Gentian Water. Excellence of character.
Bosselet-Dubied.— Kirschwasser and Absinthe. General excellence.

Absinthe history continues...

Boston University Law Review, Volume 1
1922

Switzerland on Absinthe - EXPN -

Here's an interesting article on the village where Manson's absinthe is produced.

The rocker, the village and their absinthe - International Herald Tribune -

Swiss Absinthe Distillers Have Trouble Meeting Demand

Since Kuebler was introduced to the US market, demand for this high quality absinthe has out striped production. This was reported by Yves Kuebler recently.

Absinthe Is Now Available In Boston!

Looking for high quality absinthe in Boston? You need look no further than the Wine Gallery in Boston and Brookline.

They carry two absinthes, Kubler (Swiss, 1 liter, $54.99) and Lucid (French, recipe by T.A. Beaux, 750 mL, $59.99). The Wine Gallery has two stores, one in Kenmore Square, Boston and one on RT 9 in Brookline.

Visit http://www.wine-gallery.com for more information.

Swiss Absinthe: The First Absinthe?