| # | Source ID | Title, Author | Tree | 
| 51 | S2464 | Brenda Newton 
 | Hartwell | 
| 52 | S2070 | Brian Cotton 
 | Foster | 
| 53 | S51 | Brian McCabe, GenesReunited 
 | Foster | 
| 54 | S2482 | British RAF Service Records 
 | Foster | 
| 55 | S33 | Carol Bowden, GenesReunited 
 | Foster | 
| 56 | S50 | Caroline Smailes (GR) 
 | Foster | 
| 57 | S2477 | Catholic Baptisms 
 | Foster | 
| 58 | S2476 | Catholic Burial Records 
 | Foster | 
| 59 | S94 | Cathy Jury, GenesReunited 
 | Hartwell | 
| 60 | S5 | Census 
 | Foster | 
| 61 | S23 | Census 1841 - 7 Jun 1841 
 | Foster | 
| 62 | S23 | Census 1841 - 7 Jun 1841 
 | Hartwell | 
| 63 | S2492 | Census 1841 Ampthill, Bedfordshire, UK HO107-6-2-12-18 (Head is Thomas Fossey.) 
 | Hartwell | 
| 64 | S1165 | Census 1841 Ashton, Northamptonshire, UK HO107-796-2-5-5 (Head is Mary Molcher.) 
 | Hartwell | 
| 65 | S2166 | Census 1841 Back Lane, Hutton, Preston, Lancashire, UK HO107-527-3-5-11 (Head is William Slater.) 
 | Foster | 
| 66 | S2206 | Census 1841 Bankside, St Saviour, Southwark, Surrey, UK HO107_1088-6-8-9_and_10 (Head is Stephen Davies.) 
 | Hartwell | 
| 67 | S1574 | Census 1841 Barkway, Hertfordshire, UK HO107-443-4-7-9 (Head is Charles Stacey.) 
 | Foster | 
| 68 | S1447 | Census 1841 Barley, Hertfordshire, UK HO107-433-6-8-10-and-11 (Head is Samuel Barns.) 
 | Foster | 
| 69 | S1470 | Census 1841 Barley, Hertfordshire, UK HO107-443-6-19-2 (Head is Joseph Bisco.) 
 | Foster | 
| 70 | S1453 | Census 1841 Barley, Hertfordshire, UK HO107-443-6-9-13 (Head is Benjamin Barns.) 
 | Foster | 
| 71 | S1437 | Census 1841 Bletchley, Buckinghamshire, UK HO107-56-3-10-24 (Head is Joseph White.) 
 | Hartwell | 
| 72 | S2249 | Census 1841 Boarstall, Buckinghamshire, UK HO107-38-4-4-2 (Head is Joseph Blake.) 
 | Hartwell | 
| 73 | S2474 | Census 1841 Braddan, Isle Of Man, UK HO107 1463/5 (Head of family is John Fick.) 
 | Foster | 
| 74 | S2028 | Census 1841 Buckland, Buntingford, Hertfordshire, UK HO107-443-7-5-4 (This is not a true transcription. John was a servant for Wm French, farmer. Next door were his wife and children.) 
 | Foster | 
| 75 | S2238 | Census 1841 Bunwell, Norfolk, UK HO107-757-3-8-10 (Head is Stwphen Grant.) 
 | Hartwell |