If you have the FRED Economic Reserve data enabled on your account you will have access to over 500,000 global datasets, including US treasury yields. More info here:
Attached are a couple of workbooks which can be saved and opened in your copy of Optuma, including US 10 Year - 2 Year and 10 Year - 3 Months spreads, including the Recession tool overlays.
Note: the 10Y-3M chart is a custom code created using the following formula:
DGS10:FRED - DGS3MO:FRED
Click here for more on creating custom codes.
US-Yields.owb (101 KB)
FRED-Data.owb (103 KB)