"Well I don't know about .41 Mag, but .38 Special had hollow points available."
I started shooting and handloading the .41 Magnum in 1976 or so. The only ammunition loaded by the big makers for it then was the 210 grain lead reduced load (about 950 fps) and the 210 grain jacketed soft point full power load (about 1,400 fps), both made and sold by Remington and Winchester. If you wanted 210 grain hollowpoints, you loaded your own. I liked the Sierra JHC (jacked hollow cup, their term) and the Hornaday JHP bullets in .41, but mostly cast and shot my own lead semiwadcutters.
The first jacketed hollowpoint .41 Mag factory loading was Federal's, which arrived in the early 1980's. Winchester's Silvertips came along shortly after that.
Winchester's first .41 Mag 210 grain "JHP" load was just their regular soft point bullet with a very small dimple punched in the end of the exposed lead! It was pretty comical and performed the same as their soft point, by my experience and others'.
The .41 Mag probably wasn't written into TV and movie scripts because the .44 Magnum had a more over-powering, brutal, blood-thirsty image and was already somewhat known about by the public.
There were jacketed hollow point loadings available in other pistol cartridges well before this, of course, such as .38 Special, .357 Magnum and 9 X 19 mm.
The designation +P or Plus-P didn't become defined by SAAMI (Small Arms and Ammunition Manufacturers Institute) until the late 1970's, I believe, and originally in .38 Special. Several makers loaded higher-than-normal velocity ammo before this, notably Super-Vel and Norma, without much discussion of higher pressures. Norma's 110 grain jhp .38 Special was initially touted as being loaded to standard pressures yet with higher velocities, using supposedly special powder. Norma was somewhat red-faced when SAAMI adopted +P standards, began testing and found that Norma load was well into SAAAMI's +P range. They immediately began so marking it.