
Well the sisters with the red cross might be Hospitalier sisters of the Sacred heart of jesus,a spanish community,but i am not sure. Where was the photo of the sisters with the interesting veils taken?
On ebay they have a book about the Daughters of the Cross in louisiana ,and their old head dress was kind of similar to these nuns,except the top wasn't square.Go to ebay and click on books and then type in nuns to see what i mean.
yes there are Lutheran nuns,only I believe they call them deaconesses.They are mainly found in Europe.
There are Anglican Nuns in the US and have been some for a very long time.