I have only encountered the vestiges of this movement twice. Once with the LBR (or Lady's Beverage Room) on Spring Garden Road in Halifax, NS and again at the Douglas Tavern in Renfrew Co., Ontario according to the sign at one end saying "Ladies and Escorts" - the separation of the Canadian sexes by tavern door. I had no idea that it was connected to mid-20th century VD concerns:
...in the late 1930s, the Provincial Division of Venereal Disease Control launched a major campaign against hotel beer parlours alleging that they were spreading venereal disease and that prostitution was the main source of VD. "You read these official records and it’s only women who spread disease," Campbell said with a laugh. "They never acknowledge that they got it from a man. Only women."I may work right next to another such door - likely along this row. Robert Campbell, a Capilano College history professor in British Columbia is giving a lecture on the subject entitled "Ladies and Escorts: Gender Segregation in British Columbia Beer Parlours" at Burnaby Village Museum on Thursday, Jan. 18.
The campaign intensified with the Second World War during which VD was seen as undermining the war effort by infecting young men. In 1942, the provincial government ordered that beer parlours erect physical barriers between two separate areas with separate entrances designated for men only and for ladies with escorts. The latter would allow women either alone or with their husbands and boyfriends. "The whole idea was to try to separate unattached women from unattached men."
I can't go as it is 3,000 km west of here but you could head over and let us know.