I've found the structural steel shapes spreadsheets but would like to find some of the other tables like 3-19 and 3-20 so I can put them in my composite beam spreadsheet. Are they available anywhere?
AISC recently announced that digital version of AISC 15th Manual is available. I don't know if the tables in digital version can be copy and paste or not, but I think this is the only way, unless there's somebody typed the table in spreadsheet by hand before.
The digital version is a subscription based product. So be careful.
tchoate: as other have said the shape database is available in several formats online. For specific tables such as 3-19 and 3-20 that you noted you'd be better off having your spreadsheet perform those calculations rather than using a look up table, in my opinion.