Concordances
[late Latin concordantia, harmony, from cum, with, and cor, heart] "literally agreement, harmony; hence derivatively a citation of parallel passages, and specifically an alphabetic arrangement of the words contained in a book with citations of the passages in which they occur." --Encyclopedia Britannica, 11th ed.
The most common concordances are Biblical and Shakespearean, but researchers have worked the same laborious magic on many other authors. I found Rosenbaum's Concordance to the Poems of Emily Dickinson quite by accident while looking through the following list:

W&L CATALOG 139 entries found for 'concordance' (a few pruned --and a search for 'concordances' yields a slightly different set)

  
 1 New concordance of the Bible
 2 A complete contextual concordance to Franz Kafka, Der Prozess
 3 A concordance to Shih ching
 4 A concordance to Baudelaire's Les fleurs du mal
 5 Adam Smith's An inquiry into the nature and causes of the wealth of 
   nations: a concordance
 6 All's well that ends well; a concordance to the text of the first folio
 7 An analytical concordance to the Revised Standard Version of the New
   Testament
 8 Analytic concordance to the Bible : on an entirely new plan
 9 Antony and Cleopatra. A concordance to the text of the first folio
10 As you like it; a concordance to the text of the first folio
12 The Bicentennial concordance : indexes to the Constitution of the United
   States of America
14 A commentary on Emerson's early lectures (1833-1836) with an 
   index-concordance 
15 A complete and systematic concordance to the works of Shakespeare
16 A complete concordance to Science and health, with key to the Scriptures
17 The complete concordance to Shakspere: 
18 A complete concordance to the Holy Scriptures of the Old and New Testament
19 Complete concordance to Miscellaneous writings
20 A complete word and phrase concordance to the poems and songs of 
   Robert Burns
21 The comprehensive concordance to the Holy Scriptures
22 Concordantia et index Caesaris = Concordance and index to Caesar
23 Concordance of proper nouns in the five-volume English-language
   Selected works of Mao Tse-tung
24 Concordance of statistics available in selected Federal Reserve 
   publications 
25 Concordance of the Divina commedia
26 A concordance of the works of Horace
27 A concordance of the Quran
28 A concordance of the poetry in English of Gerard Manley Hopkins
29 A concordance of Walt Whitman's Leaves of grass
30 A concordance to Beowulf
31 Concordance to Baudelaire's Petits poemes en prose
32 A concordance to Darwin's Origin of species, first edition
33 A concordance to Darwin's The expression of the emotions in man and
   animals
34 A concordance to Ezra Pound's Cantos
35 A concordance to Finnegans wake
36 A concordance to Marivaux's comedies in prose
37 A concordance to Milton's English poetry
38 A concordance to Personae: the shorter poems of Ezra Pound
39 A concordance to the plays of William Congreve
40 A concordance to The poems of Edward Taylor
41 A concordance to "The Spectator"
42 A concordance to the poems of Alexander Pope
43 A concordance to the poems of Ralph Waldo Emerson
44 Concordance to the poetry of Wallace Stevens
45 A concordance to the entire works of Alfred Tennyson
46 A concordance to the poems of Edmund Spenser
47 A concordance to the poems of John Keats
48 A concordance to the complete works of Geoffrey Chaucer
49 Concordance to the poetical works of John Dryden
50 A concordance to the poetry of Samuel Taylor Coleridge
51 A concordance to the complete poetical works of Sir Thomas Wyatt
52 A concordance to the poetry of Byron
53 A concordance to the Russian poetry of Fedor I. Tiutchev
54 A concordance to the Batifolle letters
55 A concordance to the poems of Ben Jonson
56 A concordance to The complete poems of John Wilmot, Earl of Rochester
57 A Concordance to the Apocrypha/Deuterocanonical books of the RSV
58 A concordance to the Holy Scriptures 
59 A concordance to the English prose of John Milton
60 A concordance to the complete poems of E. E. Cummings
61 Concordance to the poetry of Edgar Allan Poe
62 A concordance to the English poetry of Gerard Manley Hopkins
63 A concordance to the sonnet sequences of Daniel, Drayton, Shakespeare,
   Sydney and Spenser
64 A concordance to the Greek Testament
65 A concordance to the poems of William Wordsworth
66 A concordance to the Divine comedy of Dante Alighieri
67 A concordance to the poems of Emily Dickinson
68 A concordance to the poems of W. B. Yeats
69 A concordance to the English poems of John Donne
70 A concordance to the poems of Matthew Arnold
71 A concordance to the poems of Marianne Moore
72 A concordance to the Constitution of the United States of America
73 A concordance to The poetry of Robert Frost
74 Coriolanus; a concordance to the text of the first folio
75 A critical concordance of the Tibullan corpus 
76 A critical lexicon and concordance to the English and Greek New Testament
77 Cymbeline; a concordance to the text of the first folio
78 De concordantia Catholica.
79 Derivatives of links : Milnor's concordance invariants and Massey's 
   products 
80 The Eerdmans analytical concordance to the Revised Standard Version
81 The Englishman's Greek concordance of the New Testament
82 The exhaustive concordance of the Bible 
83 THE EXHAUSTIVE CONCORDANCE TO THE UNITED STATES CONSTITUTION
84 The Federalist concordance
85 The Federalist concordance
86 A glossarial concordance to the Riverside Chaucer
87 Harper's topical concordance
88 He Kaine Diatheke = The New Testament in Greek
89 Henry VI: a concordance to the text of the first folio
90 Henry VIII: a concordance to the text of the first folio
91 Henry V: a concordance to the text of the first folio
94 Brief concordance to the Holy Scriptures
95 The home book of Shakespeare quotations
96 The hymns of Zoroaster, usually called the Gathas
97 The illuminated Bible 
99 Keynes's The general theory of employment, interest and money: a
   general concordance
100 King John: a concordance to the text of the first folio
103 A lexical concordance to the poetical works of Percy Bysshe Shelley
104 Love's labour's lost: a concordance to the text of the first folio
105 Macbeth: a concordance to the text of the first folio
106 Maurice Sceve : Concordance de la Delie
107 The meaning of hope, a biblical exposition with concordance
108 Melville's "Benito Cereno" : an interpretation with annotated text
    and concordance
109 The Merchant of Venice; a concordance to the text of the first folio
110 A Midsummer night's dream: a concordance to the text of the first folio
111 Much ado about nothing: a concordance to the text of the first folio
112 A multiple disjunction lemma for smooth concordance
113 Nelson's complete concordance of the Revised standard version
114 A new and complete concordance or verbal index to words, phrases and
    passages in the dramatic works of Shakespeare
115 New concordance to the Holy Bible
116 NIV compact concordance
117 The NRSV concordance unabridged 
118 Paradise lost; a concordance
119 The people's standard edition of the Holy Bible
120 Pericles, a concordance to the text of the first folio
121 Pushkin : a concordance to the poetry
122 Richard II: a concordance to the text of the first folio
123 Richard III: a concordance to the text of the first folio
124 Romeo and Juliet; a concordance to the text of the first folio
127 Supplementary concordance to the minor Italian works of Dante
128 Synchronismes chinois : chronologie complete et concordance avec
    lere chretienne de tous les dates...
129 The Taming of the shrew; a concordance to the text of the first folio
130 Titus Andronicus. A concordance to the text of the first folio
131 Troilus and Cressida; a concordance to the text of the first folio
132 Twelfth night; a concordance to the text of thefirst folio
133 A Vergil concordance
134 Vocabulaire du marxisme
135 The Winter's tale; a concordance to the text of the first folio
136 The word study concordance 
132 Twelfth night; a concordance to the text of the first folio
133 A Vergil concordance
134 Vocabulaire du marxisme
135 The Winter's tale; a concordance to the text of the first folio
136 The word study concordance 
137 The word study New Testament 
139 Young's Analytical concordance to the Bible