Listmania!
Creating and/or Re-creating Languages
By an Amazon.com customer
A Computer-Generated Dictionary of Proto-Algonquian (Mercury Series)A Computer-Generated Dictionary of Proto-Algonquian (Mercury Series) by John Hewson
Buy new: $24.95
An effort to recreate the ancestor language to the old Algonquian "indian" languages once spoken throughout much of North America. Similar to trying to recreate Latin from Spanish and French.
Linguistic Reconstruction: An Introduction to Theory and Method (Oxford Textbooks in Linguistics)Linguistic Reconstruction: An Introduction to Theory and Method (Oxford Textbooks in Linguistics) by Anthony Fox
Buy new: $67.50 / Used from: $19.90
Respect this book. Now.
A Dictionary of Linguistics and Phonetics (The Language Library)A Dictionary of Linguistics and Phonetics (The Language Library) by David Crystal
Buy new: $34.20 / Used from: $19.47
This could help you to understand the books on this list.
The Languages of Tolkien's Middle-EarthThe Languages of Tolkien's Middle-Earth by Ruth S. Noel
Buy new: $10.88 / Used from: $2.49
A lot of fun
An Introduction to Elvish, Other Tongues, Proper Names and Writing Systems of the Third Age of the Western Lands of Middle-Earth as Set Forth in the Published Writings of Professor John Ronald Reuel TolkienAn Introduction to Elvish, Other Tongues, Proper Names and Writing Systems of the Third Age of the Western Lands of Middle-Earth as Set Forth in the Published Writings of Professor John Ronald Reuel Tolkien
Buy used from: $54.27
A lot of fun.
Research Guide on Language Change (Trends in Linguistics. Studies and Monographs)Research Guide on Language Change (Trends in Linguistics. Studies and Monographs)
Buy new: $291.00 / Used from: $80.00
The author of this is extremely highly regarded in the field, not just a hack like me. Listen to what he has to say.
The Origins of English Words: A Discursive Dictionary of Indo-European RootsThe Origins of English Words: A Discursive Dictionary of Indo-European Roots by Joseph Twadell Shipley
Buy new: $27.00 / Used from: $17.78
Amazing, fascinating.
The American Heritage Dictionary of Indo-European RootsThe American Heritage Dictionary of Indo-European Roots by Calvert Watkins
Buy new: $13.60 / Used from: $5.30
The final authority. Look at Amazon.com's page for this book, don't listen to me.
Experimental glottochronology: Basic methods and results (Pacific linguistics)Experimental glottochronology: Basic methods and results (Pacific linguistics) by J. B. M Guy
There is some controversy over whether this is a science, strictly speaking. But hey, if you think you can make it more objective, step up to bat!
Historical Linguistics & LexicostatisticsHistorical Linguistics & Lexicostatistics by Vitaly Shevoroshkin
Buy new: $40.00
Lexicostatistics and glottochronology are techniques of tracing back modern words into prehistory. What were they like, long ago?
Handbook of Proto-Tibeto-Burman: System and Philosophy of Sino-Tibetan ReconstructionHandbook of Proto-Tibeto-Burman: System and Philosophy of Sino-Tibetan Reconstruction by James Alan Matisoff
Buy new: $95.00 / Used from: $73.40
A major language family of early Southeast Asia.
Evidence for Old English: Material and Theoretical Bases for Reconstruction (Edinburgh Studies in the English Language, 2)Evidence for Old English: Material and Theoretical Bases for Reconstruction (Edinburgh Studies in the English Language, 2)
Buy new: $72.00 / Used from: $85.00
How well do we really undrestand what the composers of Beowulf spoke?
Reconstructing Proto-Afroasiatic (Proto-Afrasian): Vowels, Tone, Consonants, and Vocabulary (Voices from Asia)Reconstructing Proto-Afroasiatic (Proto-Afrasian): Vowels, Tone, Consonants, and Vocabulary (Voices from Asia) by Christopher Ehret
Buy new: $75.00 / Used from: $49.32
Spoken long ago, somewhere in the Middle East.
Lost Languages: The Enigma of the World's Undeciphered ScriptsLost Languages: The Enigma of the World's Undeciphered Scripts by Andrew Robinson
Buy used from: $6.80
Really neat.
Breaking the Maya CodeBreaking the Maya Code by Michael D. Coe
Buy new: $13.57 / Used from: $5.99
Wow.
The Story of Decipherment: From Egyptian Hieroglyphs to Maya ScriptThe Story of Decipherment: From Egyptian Hieroglyphs to Maya Script by Maurice Pope
Buy new: $19.95 / Used from: $6.99
Terrific overview.
The Decipherment of Linear B (Canto)The Decipherment of Linear B (Canto) by John Chadwick
Buy new: $19.99 / Used from: $5.73
Fun and neato.
The Riddle of the Rosetta StoneThe Riddle of the Rosetta Stone by James Cross Giblin
Buy new: $7.99 / Used from: $1.51
Fun, and can be read by a younger audience.
Indo-European and the Indo-Europeans: A Reconstruction and Historical Analysis of a Proto-Language and a Proto-Culture : The Text (Trends I)Indo-European and the Indo-Europeans: A Reconstruction and Historical Analysis of a Proto-Language and a Proto-Culture : The Text (Trends I) by Thomas V. Gamkrelidze
Buy new: $366.70 / Used from: $224.72
Also look for anything by Calvert Watkins.
The Nostratic Macrofamily & Linguistic Paleontology (Papers in the Prehistory of Languages)The Nostratic Macrofamily & Linguistic Paleontology (Papers in the Prehistory of Languages) by Aharon Dolgopolsky
Buy used from: $195.00
Last I heard, this was still somewhat controversial. Research the topic on the internet as well as you can, before buying this. You're on your own.
The Power of Babel: A Natural History of LanguageThe Power of Babel: A Natural History of Language by John H. McWhorter
Buy new: $11.16 / Used from: $6.73
Terrific overview.
Rongorongo: The Easter Island Script: History, Traditions, Text (Oxford Studies in Anthropological Linguistics, 14)Rongorongo: The Easter Island Script: History, Traditions, Text (Oxford Studies in Anthropological Linguistics, 14) by Steven Roger Fischer
Buy new: $294.56 / Used from: $325.00
the script on Easter Island -- that island with all the old statue/monument things, looking out to sea...
The Mystery of the Hieroglyphs: The Story of the Rosetta Stone and the Race to Decipher Egyptian HieroglyphsThe Mystery of the Hieroglyphs: The Story of the Rosetta Stone and the Race to Decipher Egyptian Hieroglyphs by Carol Donoughue
Buy used from: $93.50
Wow.
Early Germanic Grammar: Pre-, Proto-, and Post-Germanic LanguagesEarly Germanic Grammar: Pre-, Proto-, and Post-Germanic Languages by Joseph B. Voyles
Buy new: $91.95 / Used from: $100.08
An effort to reconstruct the immediate ancestor language of English.
Deciphering the Indus ScriptDeciphering the Indus Script by Asko Parpola
Buy used from: $40.21
I haven't seen this book, but the topic is amazing.