Coptic dictionary
by Walter Ewing Crum (1939) or another version
Vocabularium coptico-Latinum: Coptic-Latin
dictionary by Gustav Parthey (1844)
Peyronis lexicon copticum,
Lexikon linguæ copticæ: Coptic-Latin dictionary by Amedeo Peyron (1896)
Lexicon ægyptiaco-latinum:
Coptic-Latin dictionary by Mathurin Veyssière de Lacroze & Charles Godfrey Woide (1775)
Lingua ægyptiaca restituta:
Coptic-Latin-Arabic dictionary by Athanasius Kircher (1643) 
Coptic keyboard
Coptic
course [PDF]
Introductory Coptic grammar by John
Martin Plumley (1948)
Compendious grammar of
the Egyptian language by Henry Tattam (1830)
Grammaire copte: Coptic
grammar by Alexis Mallon (1907)
Koptische Grammatik:
Coptic grammar by Ludwig Stern (1880)
Koptische Grammatik:
Coptic grammar by Möritz Gotthilf Schwartze & Heymann Steinthal (1850)
Grammatica
linguæ copticæ: Coptic grammar by Amedeo Peyron (1841)
Rudimenta linguæ coptæ
sive ægyptiacæ by Raphael Tuki (1778)
books about the Coptic language: Google
books & Internet
archive
Coptic texts: Gospel of Thomas, Gospel
of Judas, Coptic apocryphs & documents
The Gospel of Judas:
manuscript (3rd century) & translation in English 
Miscellaneous Coptic texts in
the dialect of Upper Egypt, by Wallis Budge (1915) with English translation
Coptic Apocrypha
in the dialect of Upper Egypt, by Wallis Budge (1913) with English translation
The Coptic version of
the New Testament in the Northern dialect, otherwise called Memphitic and Bohairic, with a literal English
translation, by George Horner (1898) : Matthew & Mark & Luke
& John - Paul - other
books
The Coptic version
of the New Testament in the Southern dialect, otherwise called Sahidic and Thebaic, with a literal English
translation by George Horner (1911) : Luke & John
- Paul (1 & 2)
- Acts of the Apostles - Catholic
Epistles & Apocalypse
The new biblical papyrus,
a Sahidic version of Deuteronomy, Jonah, and Acts of the Apostles, by Herbert Thompson (1913)
The Apostolical Constitutions or
Canons of the Apostles, by Henry Tattam (1848) with English translation
Acta apostolorum
coptice: the Coptic version of the Acts of the Apostles, by Paul de Lagarde (1852)
The Coptic Psalter
in the Freer collection, by William Worrell (1916)
The Ancient
Coptic version of the Book of Job the Just by Henry Tattam (1846)
The Coptic (Sahidic)
version of certain Books of the Old Testament by Herbert Thompson (1908)
Der Pentateuch
koptisch: the Coptic Pentateuch, by Paul de Lagarde (1867)
The martyrdom and
miracles of Saint George of Cappadocia by Wallis Budge (1888) with English translation
Short texts from Coptic
ostraca and papyri by Walter Ewing Crum (1921)
Le martyre de Saint Hélias: The Martyrdom of
St. Helias, by Georgy Sobhy (1919) with French translation
Histoire du patriarche copte Isaac: The life
of the Coptic patriarch Isaac, critical study, text and translation (in French) by Émile Amélineau (1890)
Études sur
les fragments coptes des Conciles de Nicée et d'Éphèse by Charles Lenormant (1852)
Coptic texts (Internet
archive)