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)