I have been reading Velupillai's An Introduction to Linguistic Typology, and the author stresses how much work still needs to be done for sign languages in general. She mentions in particular that there are almost no reference grammars available for any sign language at all, so that typological studies become rather difficult.
I'm now trying to find a reference grammar on any sign language, and I can only come up with one: New Zealand Sign Language: A Reference Grammar, by Rachel McKee. It's only available as an ebook, and I'm not sure if it is actually a comprehensive reference grammar or a shorter grammar for reference by learners.
Can anyone refer me to a comprehensive reference grammar on any sign language? If I am mistaken and there are now plenty, a list of some good examples would be especially useful.