In the docs file for my 2018 taxes which were filed on 2-6-19, I don't see any of the documentation and calculation worksheets that were used in calculating my return.

If the Download/print return button on the Tax Home web page cannot be used to print your tax return, then follow this procedure -

When you sign onto your online account and land on the Tax Home web page, scroll down and click on Add a state.  See screenshot

This will take you back to the 2018 online tax return.

Click on Tax Tools on the left side of the online program screen.  Then click on Print Center.  Then click on Print, save or preview this year's return.   Choose the option - Include government and TurboTax worksheets

Thank you!