If you're talking about Neiman Marcus main woodmark, I don't think it's a font, rather a custom lettering.
Eyehawk@MF WhatTheFontForum suggested to start with "... Snapper Script A&S, straightened it out, and scaled it up vertically, and it looked like it might work."
The freehand Neiman Marcus trademark has been around for at least 70 years (see ad from Vogue in 1944, when you could buy a chic outfit from Neiman Marcus and still get change back from a fifty). It has undergone many small modifications over the years, and somewhere along the line they dropped the hyphen.
Captured from web.archive.org on 21 Sep 2019. view this capture