I am searching for a couple of publications but have had great difficulty. Can anyone provide assistance ?

I searching for two books in particular and they can be used, in any reasonably good condition.

I’m interested in purchasing :
Pak Mei Kung Fu, by H.B. Un (Un Ho Bun): Post 1985 versions / the edition(s) with 96 pages.
Pak Mei Tiger Fork, by Ng Yiu

Are any of you aware of actual sources for either of these ; or perhaps anyone have copies they are willing to part with for a fee ?

I would also be interested in any other books related to this style and would certainly appreciate information regarding other publications you are be aware of.

Thank you !