@joerubin
If you used the "Online" software last year....try downloading a NEW PDF copy of your 2023 tax return. That new copy may contain all the worksheets from your 2023 filing, that was archived at the end of the filing year (at least it used to). In there will be a list of Charities in one of the worksheets for you to print.
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In the future, when you are ready to file, you should download two PDF file copies from the Print Center, Before the end of the filing season 1) a "Filing Only" copy and a second (2) Copy with ALL worksheets & Forms.
Then back them up on a flash drive, and you won't be left hanging in the future scrambling around to find such information