1.  Timothy Hopkins.  1932.   John Hopkins of Cambridge, Massachusetts, 1634, and Some of His Descendants. Stanford Univ. Press, Stanford, CA.  On p. 113:

James ... b. at Harwinton, Connecticut, 27 February 1739; m. Ruth Hopkins (whose parentage is unascertained).  He d. in Pittsford, Vermont.     On 5 September 1769, James bought two lots in Pittsford, Vermont, one on the east and the other on the west side of Otter Creek.  He made a clearing and built a log house on the east tracta and spent the following winter with his family, probably at Harwinton.  Early in the spring he removed to Pittsford with his wife, children, and aged parents.  After making a clearing and building a log house on the west side of the creek, he, in August 1774, deeded the east lot to his father, who, with the assistance of his grandsons, Ebenezer and Martin, occupied and improved it.  (Caverly's History of Pittsford, pp. 32, 708.)  In 1786 he was fined for participation in the Rutland Riot, and in the First Census of 1790 is enumerated as of Pittsford.     James Hopkins was a soldier in the Revolution.  He served in Capt. Thomas Sawyer's Company from 9 to 18 March 1778, in an alarm to defend the frontiers of the state;b his name appears as Ensign in the Ninth Company (from Pittsford) in the Second Regiment of Vermont Militia, Col. Gideon Warren, 28 May 1778; Ensign in Capt. Benjamin Cooley's Company, Col. Ebenezer Allen's Regiment, 23 to 28 March 1780; also in Captain Paterson's Company, Col. Gideon Warren's Regiment, 14 to 24 October 1781. (Vermont Revolutionary War Rolls, pp. 61, 161, 787.)

aThe population of Vermont at this time was in the neighborhood of five thousand, chiefly on the east side of the mountains.  Hall, in his 'Ethan Allen,' thus speaks of the early pioneer days of that state:  'The bulk of the people lived in log houses with earthen floors, and with windows made of oiled paper, isinglass, raw hides, or sometimes of 6x8 panes of glass.  Smaller log houses were used to protect domestic animals from wolves and bears, as well as from the inclemency of the weather.  It was the life of the frontier in the wilderness, when the struggle for bare sustenance left little time for the acquirement of knowledge, much less of accomplishments.' (Hall's Ethan Allen, The Robin Hood of Vermont, p. 199.)

bExcerpt from Vermont Revolutionary War Rolls, p. 799: 'Arlington, March 12, 1779 Resolved that the north line of Castleton, the west and north lines of Pittsford to the foot of the Green Mountains be and is hereby Established a line between the Inhabitants of this State and the Enemy, and all the Inhabitants of this State living to the north of said line are directed and ordered to immediately move with their families and Effects within such Lines.'

2.  Caverly, A.M.  1872.  History of the Town of Pittsford, Vt.  Tuttle & Co., Printers, Rutland.  Note that the Ebenezer whom Caverly calls "Senior" is our Ebenezer "Junior."  On pp. 32-33:

Ebenezer Hopkins was born in Waterbury, Conn. in 1699, married in 1728, and settled in Hartford.  He became one of the original proprietors of Harwinton in the same State, and removed there in 1733.  He had three sons, James, Nehemiah, and Elias, the two former born in Hartford, the latter, and a daughter, Tabitha, born in Harwinton. [p. 33] James married and had the following children, viz.: Caleb, James, Rhoda and Susannah... James Hopkins came to Pittsford in the summer of 1769, and was so well pleased with the township that he purchased of Felix Powerll two rights of land, a part of which he pitched on the east side of Otter Creek, and a part on the west side.  The deed which was in consideration of 'Fifteen Pounds Ten Shillings Three Pence New York Currency' was dated 'this 5th day of September A.D. 1769, and in the 9th of his Majesty's Reign.'  One of the two rights thus conveyed was originally granted to Jacob Hemenway, and the other to Samuel Brewer.  Mr. Hopkins' first pitch of one hundred acres on the Hemenway right, was nearly identical with the farm just south of the Village, now owned by S.B. Loveland.  During the fall of that year he made a clearing upon this tract and built a log house which stood about seventy rods southwest of the site of the present house, and near Mr. F. Durdett's north line.  The following winter he spent with his family, quite likely, in Harwinton.  Early in the spring, with his wife, children, and his aged parents, he set out for the wild lands of the New Hampshire Grants.  It was a wearisome journey but successfully accomplished, and being accustomed to a forest life they well understood how to adapt themselves to the rude circumstances in which they were placed.     Having made for himself a comfortable home on the east side of the Creek, Mr. Hopkins began some improvements upon a lot he had pitched on the west side.  He made a clearing and built a house about midway between the present residences [p. 34] of Nelson Loveland and the Hendee brothers.  This was a small log house, and stood about twelve rods west of the present travelled road, and on land now owned by Mr. Loveland.  August 4th, 1774, he deeded his lot with its improvements, on the east side of the Creek, to the old gentleman, who, with the assistance of his grandsons, Ebenezer and Martin Hopkins [footnote], continued to occupy and improve the place, while he devoted his energies to improvements upon his lot on the west side of the Creek.

[footnote] They had come from Stockbridge to reside with him.

On p. 179:

On the Roll of 'Capt. Patterson's Company, Col Warren's Regiment, for service in the alarm in October, 1781,' are the names of Samuel Hopkins and James Hopkins.

On p. 708 (capsule biographies):

Hopkins, James eldest s of Ebenezer, Sen., m and had--1. Caleb, m and settled in Genesee, N.Y.; 2, James, Jr., m and settled in the western part of the State of New York; 3, Rhoda, m Elias Hopkins, Jr.; 4, Susannah, m Elijah Kirkham, of Whiting, and some time after, with her husband and one child, was drowned in Lake Champlain.