Unused, undivided back card with instructions to use a 2-cent stamp, so it’s hard to judge the card’s age.  As we often do, we went to Google to check the hotel’s history.  The first several entries all pointed to similar stories, of which we reproduce some of one (glapn dot org) here:  “The Louvre was an elegant restaurant located in the Hotel Belvedere on the northeast corner of Fourth and Alder.  Built in 1891, the Belvedere survived the massive flood of 1894 and was purchased in 1907 by property developer Theodore Kruse.  Once he owned the restaurant, Kruse turned it into a “bohemian” place.  Separate restaurants were located inside, one for mixed male‑female dining and one for men only.  (It isn’t known if there was one for women only as well.)  The “Gents’ Dining Room” looked different from that of the mixed dining room.  The men‑only dining room sported potted palms and mirror‑lined walls.  The Louvre became infamous in certain legal circles.  It possessed a liquor license, and there a number of reports in local newspapers cited liquor law violations.  In one from 1908, the Louvre found itself on a list of eight “gay refectories” where the “gay laugh” could be heard.”  That’s enough from us, and this card does cite Kruse as the proprietor.  Grade: 2