There may be situations where the data you are looking for is in a print handbook. Here are the larger property data collections in the library.
NIST Critically Selected Stability Constants of Metal Complexes: Version 8.0, is based on this set and includes additional ligands. It can be downloaded, but is not compatible with 64 bit systems or anything more recent than Windows XP without an emulator.
V. 1 - Vapor-liquid equilibrium data collection (Ref QD503 .G59 )
V. 4 - Recommended data of selected compounds and binary mixtures (Ref QD458 .S74 1987)
V. 5 - Liquid-liquid equilibrium data collection (Ref QD503 .S67)
V. 9 - Activity coefficients at infinite dilution (Ref QD541 .A28 1986)
The volumes are organized by element, with the indexes arranged in alphabetical order by the elements. Older volumes are in German and English. You can also use the Formula Indexes at the end of the run to find your compound.
International thermodynamic tables of the fluid state
Equilibrium constants of liquid-liquid distribution reactions
Ionisation constants of organic acids in aqueous solution
Ionisation constants of inorganic acids and bases in aqueous solution
Handbook of thermodynamic and transport properties of alkali metals
Enthalpies of vaporization of organic compounds : a critical review and data compilation
Measurement of the transport properties of fluids
The Comprehensive Index (REF QC61 .Z312) covers all of the volumes in the 6th edition as well as the New Series through 1995.
You can also try ThermoDex, a property data finding aid from David Flaxbart at University of Texas at Austin Libraries. Select from the properties list to view a list of potential handbooks to check.
However, once you find a title you still need to search for it in our library catalog: