Verb (used without object) : Footnotes cross-index to the appendix and bibliography.    From Dictionary.com. 

Then, it occurred to us that we could cross-index all this material, so that when the.    From Wordnik.com.  [Introduction] Reference

This contains information on more than 9,500 artists and a cross-index of agency personnel.    From Wordnik.com.  [How To Buy & Sell just about Everything] Reference

They can cross-index with their own licensing database to see if such a transmitter is authorized.    From Wordnik.com.  [The Volokh Conspiracy » Can the FCC Search Your Home?] Reference

I started to cross-index my notes by vintage and by chateau; and again I did not realize at that time how useful this was going to be.    From Wordnik.com.  [My Life and Hard Wines] Reference

Written custom Web application to cross-index entire 2,000+ album music collection and play it remotely from any browser.1 See item #2.    From Wordnik.com.  [The dreaded "Where I've lived" meme] Reference

A lot of women wrote their memoirs, which means one can cross-index the whole thing and see the same event from many different viewpoints.    From Wordnik.com.  [Napoleon Bonaparte] Reference

The now position was determined mainly by eliminating past assignments with a cross-index, which is why the records of all dives were rigorously maintained by Locator.    From Wordnik.com.  [Timegod's World]

These match-ups happen because it is common for BBC producers to keep Sellotaped notebooks, and now digital files, that cross-index subjects with possible contributors.    From Wordnik.com.  [From porn to Portillo | Mark Lawson] Reference

But the thought patterns originating within the mind itself, the processes that correlate and cross-index and speculate on and hypothesize about the sensory data, these are much more fragile.    From Wordnik.com.  [Anything You Can Do ...] Reference

"About how to cross-index our follow-up letter catalogue better," he answered promptly.    From Wordnik.com.  [The Squirrel-Cage] Reference

P.M. I had a leather document case stuffed with papers and a cross-index of 'em in my so-called brain.    From Wordnik.com.  [The House of Torchy] Reference

The fastest way to hit the ground running would be for Google's 176 million monthly users to cross-index their friends among Facebook's 500 million members.    From Wordnik.com.  [Ars Technica] Reference

About 400,000 words, with 39-pg cross-index and an appendix of 150 pages of additional documentation for researchers, reporters and students of American foreign policy and national security issues.    From Wordnik.com.  [MMD Newswire: Press Release News Wire] Reference

I make a fine Archivist precisely because of that, you know, for I have to index and cross-index everything, or I would never be able to find a single reference. ".    From Wordnik.com.  [The Robin And The Kestrel]

I searched the cross-index, sir.    From Wordnik.com.  [Ring Around the Sun]