The best thing about them is that as pdf's they have a search function, so searching for pranayama within vol 1 gives us...
There are two volumes, Vol 1 contain Ramaswami's newsletters from 2009 and Volume 2 from 2010.
Here are the links
They will be available for download permanently on the right sidebar along with Krishnamacharya's Yoga Makaranda under the heading FREE TO DOWNLOAD
This years newsletters can be viewed on Ramaswami's website under Newsletters, Hopefully K. will make volume 3 available at the end of the year.
So a big thank you to K as well to Ramaswami for giving permission to publish them here.