SCH C business assets? Or SCH E rental assets? Maybe SCH F farm assets?
If SCH E assets, then in your 2019 tax return you will find two IRS Form 4562's that print in landscape format. One is titled "Depreciation and Amortization Report" and the other is "Alternative Minimum Tax Report". You'll also need the Form 8582 showing your PAL carry overs. The 8582 will only exist if you did "in fact" have any carry overs in 2019 to be carried over to 2020.
Do yourself a favor ... download a fresh PDF of the prior year return (which includes all the info they require IF you have been properly depreciating the assets). Then put the PDF on a thumb drive and let them extract what info they need ... do NOT try to print 100+ pages of the return.
They need to see what's been depreciated and how it's being depreciated.
It's all there in black and white, on the 4562 title "Depreciation and Amortization Report".
-The name of the asset
-The date the asset was placed in service
-The cost of the asset
-The depreciation method used
-The convention used in the first year
-The total amount of prior year's depreciation already taken
-The amount of depreciation taken in the current tax year.