where are my email addresses stored

[thesaint]

I cannot find a contacts list which contains previously inserted email addresses.
I can look in "People" and indeed some of these have an email address; However some of the "People" do not contain an email address as part of their data, yet if I start to compose an email and write the name of the contact; N7 finds and inserts their address.
Where did it find it?

[bcdfghjklmnpqrstvwxz]

Might be in your email history or email-specific memory.

[Tiny]

I haven't had this problem because I don't use gmail for my primary.  I think it might be some kind of sync problem.  A Google search shows that you are not alone.  I haven't been able to find a solution.

Help- where is the address book/list of contacts on GMail, etc.?

how do you access gmail contacts using the Nexus 7

You might try some of the many contacts list organizers in the Google Play Store.

Sorry I couldn't be more help.