How to publish separate issues of a newsletter

Hi I hope someone can help me with this problem.

I am about to use WordPress to publish an online newsletter. The newsletter is published quarterly with an Issue number. Is there a way that:

1. I can restrict content by Issue such that there is a clear distinction between issues (e.g. when I visit the site in May I should only be able to view May’s newsletter content)

2. Past issues (editions) of the newsletter can be archived and visible/searchable if required.

I know I could add an “Issue” category or tag to each article added to the site but if I were to then link to that issue category I would only see a long list of articles rather than what I want to see, which is the website content displayed within all of the site’s sub categories (like a traditional website).

I am stumped but I’m sure that some of you have a neat solution.

Any help much appreciated.

Simon