Where can I find a copy of Guy Jacobson's thesis "Succinct Static Data Structures"?
You could try writing CMU to ask for a copy of the technical report version; Jacobson's thesis is technical report number CMU-CS-89-112.  No idea if this would actually work though. 

It's also possible, but unlikely, that Jacobson's advisor has an electronic copy.

As a last resort, you (or your advisor, or your university library) can order a copy from ProQuest, the entity formerly known as University Microfilms. [Sorry, there's no way to link directly; just search for "Guy Jacobson".]  A PDF copy costs \$37; a softbound paper copy costs \$59.