How do i find an old invoice from 3yrs ago

Hello David,343, 

Welcome to the Community page, 

So to find an old invoice from 3 years ago you can go to Sales>invoices> status can sent to all> date select the date and all the invoices for that year will then show up for you to the look through. Or you can click on sales>all sales> filter and fill in the boxes you need > apply and again it will bring up all the information that you have selected and find the invoice that way.