Mark Davies
PhD Dissertation
"The Diachronic Evolution of Causative Constructions in Spanish and Portuguese"
Univ. Texas at Austin, 1992
Introductory  
Chapter 1 Introduction
Chapter 2 Finite / non-finite
Chapter 3 Case marking
Chapter 4 Clitic placement
Chapter 5 Use of se
Chapter 6 Word order
Chapter 7 Explaining changes
List of texts  
References  

Note: Chapter 6 is missing. The other files are in MS Word format, except for Chapter 4, which is a WordPerfect 5.1 file (there is an error, and it won't convert to MS Word)