Digital editions of NSSM 200 are easily found on the Internet. If you want a bound, printed edition, there is only one. Click on the cover image to the right.
To download the PDF as found on the USAID website, click here: NSSM-200
Here is the link to the file on the USAID website.
This site, one of the few that not only supports the goals and methods of NSSM 200 but wishes it had gone further, has the text on the web.