Can I access my reported income documents from a previously filed tax return?

Use the instructions I'm linking below to access a copy of your 2019 return.  NOTE:  If you don't see the "Documents" icon as directed, scroll to the bottom of that page and select ""Your tax returns and documents".  You should be able to locate it from there.

How do I access my prior-year return? 

Yes - I was able to print out my tax return no problem. I was hoping to find some worksheet or document that had more specific information about the individual sources of income I listed, not just the total amount. I have a number of different types of income and income tax forms.

Thanks for your suggestion

@gingerclove If you have the PDF of your return (including the worksheets), you'll be able to find more of a breakdown of some sources of income.