Vintage Porn Inspiration for New Erotica

So I'm working on an erotica book 

thank to the inspiration provided 

by this vintage porn- 

I think most of it is Victorian era 

to Edwardian era 

which puts it 1880s to early 1900s

I may be wrong but that's what it looks like to me- 

without the original photo 

in front of me it's hard to tell