I happened to have several microfilms on loan last weekend from the Library of Virginia which mention Robert Carter and I took a few notes. You can get these and other records delivered to the nearest library to you which has a microfilm reader, courtesy of the Library of Virginia's interlibrary loan program.
Lancaster County Court Order Book 1713-1721
10 November 1714, page 77, the deed of Mark Attkins to Robert Carter for sundry Negroes acknowledged in court.
9 October 1717, page 210, Scipio a Negro boy belonging to Robert Carter Esq. is adjudged to be 7 years old.
12 April 1721, p.338, Joe a Negro boy Imported belonging to Robert Carter Esq. adjudged to be 11 years old.
338-9, Kaftey a Negro boy Imported belonging to Robert Carter Esq. adjudged to be 12.
339, Belinda a Negro Girle Imported belonging to Robert Carter Esq. adjudged to be 9.
Lancaster County Orders 1721-9,
p.59, 12 September 1722, On motion of Robert Carter Esq. setting forth that Madagasca Jack a Negro slave belonging to him hath for some time past lain out hid and lurked in swamps and woods and other obscure places both here and in Maryland killing hogs and committing other injurys to hid majesty's good subjects. And that he hath with great charge apprehended the said Negro...Order he have leave to cut off all the toes on one of the said Negroes feet in order to the reclaiming him and terrifying others from the like practices.
p.100, 8 May 1723, Robert Carter Esq. against Priscilla Palmer for having an intrique with a slave called Mullatto Billy and being caught a bed with his said slave in his Negro Quarter...afraid the said Priscilla will runaway.
p.101, Churchwardens present Priscilla Palmer for having a Mulatto bastard child.
p.218, 14 September 1726, Sary a Negro girl belonging to Mr. Robert Carter, Jr., adjudged 14 years.
Judy ditto 9 years.
p.238, 14 June 1727, Jemmy a Negro boy belonging to the Honorable Robert Carter, Esq. adjudged 12.
Wooda a Negro girl 12.
Baker a girl 9
p.251, 9 August 1727, Cris a Negro girl belonging to Robert Carter, Junr. Esq., adjudged 12.
Sam a boy 11
Jack a boy 13
Fillis a girl 10
Betty a girl belonging to Robert Carter Esq. 8
Tom a boy ditto 7
p.263, 14 February 1727/8, William Bell a Mulatto man servant belonging to Capt. Thomas Carter came into court and acknowledged he had 8 years to serve at 15 June next & voluntarily agreed to serve Robert Carter Esq. 4 years after the expiration of ye said 8 years in case he would purchase him from the said master which the said Robert Carter agreed to do.
12 June 1727, page 273, Robert a Negro boy belonging to Mr. Robert Carter son of Robert Carter, Junr., Esq. adjudged 9 years old.
10 July 1728, page 282, Funn a Negro boy belonging to Hon. Robert Carter, Esq., adjudged 12.
Ross a boy 13
Sullivent a boy 10
Venus a girl 11.
p.288, 11 September 1728, Sullivent a Negro boy belonging to Hon. Robert Carter Esq. adj. 12
Shilpone a boy 12
Knapsack a boy 14
Cloe a girl 15
Lancaster County Deeds No. 9, 1701-1715
p.485 Robert Gibson to Robert Carter Esq. 128 pounds, 19 shillings for four negroe slaves named Toney Balizal? Tom? and Betty. 25 March 1713.