English Dictionaries, by which I mean books that translate English words into other English words, have a rich history.
Aside from prints and reprints of the books themselves, I have found The English Dictionary from Cawdrey to Johnson by De Witt T. Starnes and Gertrude E. Noyes, 1946, an invaluable asset.
As far back as the year 1200, there are lists of words translating English to or from other languages, but those don't count.
Edmund Coote's The English Schoole-Master, 1596, contained, among other things, a list of hard English words with simple definitions; and so was perhaps the first publication to contain an English Dictionary.
Robert Cawdrey's A Table Alphabeticall of 1604 is probably the oldest known English dictionary.
John Bullokar's An English Expositor (1616)
Henry Cockeram's The English Dictionarie (1623)
Thomas Blount's Glossographia (1659)
Edward Phillips's The New World of English Words (1658)
Elisha Coles's An English Dictionary (1676)
somebody's Gazophylacium Anglicanum (English Treasury) (1689)
J.K.'s (identity unknown) A New English Dictionary (1702) was the first unabridged dictionary, in that it tried to include all words, and not just the difficult ones.
Cocker's English Dictionary (1704)
John Kersey's revision of Edward Phillips's The New World of Words (1706) 38,000 entries
somebody's Glassographia Anglicana Nova (1707)
John Kersey's Dictionarium Anglo-Britannicum (1708)
Nathan Bailey's An Universal Etymological English Dictionary (1721) 40,000 entries
Nathan Bailey's The Universal Etymological English Dictionary Wolume II (1727)
Nathan Bailey et al Dictionarium Britannicum (1730) 48,000 entries.
Thomas Dyche and William Pardon's A New General English Dictionary (1735) 20,000 entries. Much longer definitions
Benjamin Martin's Lingua Britannica Reformata (1749)
John Wesley's The Complete English Dictionary (1753) 4,600 entries
Joseph Nicol Scott and Nathan Bailey's A New Universal Etymological Dictionary (1755) 65,000 entries
Samuel Johnson's A Dictionary of the English Language published in 1755, with an important 4th edition 1773 is the largest English Dictionary ever created by a single individual. 40,000 entries.
The first dictionary of American English was created by Noah Webster in 1806. Webster's Dictionary has become synonymous American English Dictionaries, especially since his earlier works ran out of copyright, and many folks publishing an American English Dictionary used both his work and his name. The actual research done by Noah Webster lives on in the Merriam Webster's Dictionary
The Oxford English Dictionary begun somewhere between 1857 and 1879 (depending on how you count), and first published in 1928 is by far the largest and most complete English Dictionary ever produced.
The Canadian Oxford Dictionary exists, but I don't know much about it.