Ok. You just found some 45s.
Now you are rich, rich, rich.
But how to be sure?
You will need to know the exact value of each 45.
You will need to know the if they are first pressings.
First pressings will always have a date on the label of the pressing.
If there is no date it is a repress.
Here is the Manship online price guide: http://www.raresoulman.co.uk/search/Artist/Search%2BTerm/list, you can add 20-50% if it is a really rare record, like over $50.00.