Frontmatter -- Preface and Acknowledgments -- Contents -- List of Abbreviations and Notational Conventions -- List of Figures -- List of Tables -- 1 Introduction: Grammar and grammaticalization research -- 2 Motivation: Forging new paths in grammaticalization research -- 3 Literature review: Where do we come from and where do we go from here? -- 4 Methodology and data -- 5 The Mayan language family -- 6 The Pan-Mayan motion verbs -- 7 Grammaticalization of Mayan motion verbs into motion, purpose, and trajectory -- 8 A glance at the fate of the grammaticalized Mayan motion verbs: TAM, unusual targets, and language contact -- 9 Discussion: Coming full circle -- 10 Recap -- References -- Index of Authors -- Index of Languages -- Index of Subjects -- Appendix I -- Appendix II -- Appendix III -- Appendix IV -- Appendix V -- Appendix VI