It was on the tail of her gem that there used to be signs in NYC that said "No Irish, No Entertainers, No Jews, No
While looking for a reference to, well anything that could be called research, related to this "No" sign, I found this interesting paper by Richard J. Jensen from 12/12/2004:
"No Irish Need Apply":
A Myth of Victimization
Abstract (the whole article at the link)
Irish Catholics in America have a vibrant memory of humiliating job discrimination, which featured omnipresent signs proclaiming "Help Wanted--No Irish Need Apply!" No one has ever seen one of these NINA signs because they were extremely rare or nonexistent. The market for female household workers occasionally specified religion or nationality. Newspaper ads for women sometimes did include NINA, but Irish women nevertheless dominated the market for domestics because they provided a reliable supply of an essential service. Newspaper ads for men with NINA were exceedingly rare. The slogan was commonplace in upper class London by 1820; in 1862 in London there was a song, "No Irish Need Apply," purportedly by a maid looking for work. The song reached America and was modified to depict a man recently arrived in America who sees a NINA ad and confronts and beats up the culprit. The song was an immediate hit, and is the source of the myth. Evidence from the job market shows no significant discrimination against the Irish--on the contrary, employers eagerly sought them out. Some Americans feared the Irish because of their religion, their use of violence, and their threat to democratic elections. By the Civil War these fears had subsided and there were no efforts to exclude Irish immigrants. The Irish worked in gangs in job sites they could control by force. The NINA slogan told them they had to stick together against the Protestant Enemy, in terms of jobs and politics. The NINA myth justified physical assaults, and persisted because it aided ethnic solidarity. After 1940 the solidarity faded away, yet NINA remained as a powerful memory.
As mentioned in the paper, certainly the occasional mention was made. One could read the NYT classifieds every day for 20 years in the 19th century and find the reference perhaps twice. The NINA signs appeared in England, but did not seem to make it across the pond in any numbers that could be called prolific.
And now, an actress wishes to add entertainers to the myth.