The film numbers that you require ar D.E.D. 38/
number 69 Summerhill is in D.E.D. 38/72 so you could work back from that
Taken from the link below
http://www.familysearch.org/eng/library/fhlcatalog/supermainframeset.asp?display=titlefilmnotes&columns=*%2C0%2C0&titleno=274339&disp=Census+returns%2C+St.+Thomas%27+Parish++
Regard
Noel
Title Census returns, St. Thomas' Parish (Dublin, Dublin), 1901-1911
Authors Ireland. Census Office (Main Author)
Note Location
Film
1901 D.E.D. 38/76 FHL BRITISH Film
832603
1901 D.E.D. 38/29-65 FHL BRITISH Film
832604 Items 1-2
1901 D.E.D. 38/28; 38/29-41 (another filming) VAULT BRITISH Film
1408774
1901 D.E.D. 38/42-62 (another filming) VAULT BRITISH Film
1408775
1901 D.E.D. 38/63-75 (another filming), D.E.D. 38/76 VAULT BRITISH Film
1408776
1901 D.E.D. 38/66-75, 77-78; 39/3, 4a, 1-3, 4b, 4a, 5-14 (some material filmed twice, and 3, 4a, 4b are all mixed) FHL BRITISH Film
832605 Items 1-2
1901 D.E.D. 38/77-78 (another filming) VAULT BRITISH Film
1408827 Item 1
1901 D.E.D. 39/15-44 FHL BRITISH Film
832606
1901 D.E.D. 39/45-80 FHL BRITISH Film
832607 Items 1-2
1901 D.E.D. 39/81-114 FHL BRITISH Film
832608 Items 1-2
1901 D.E.D. 39/115-165 FHL BRITISH Film
832609 Items 1-2
1901 D.E.D. 41/39-40, 52, 41-47, 75 FHL BRITISH Film
832612
1901 D.E.D. 41/50, 57, 56, 49, 48 FHL BRITISH Film
832613
1901 D.E.D. 41/77, 58-59, 66, 51, 76, 65, 53, 55, 63, 62, 64 FHL BRITISH Film
832614 Items 1-2
1901 D.E.D. 41/71, 70, 72 FHL BRITISH Film
832615
1901 D.E.D. 41/67, 60-61, 68-69, 74, 73, 54 FHL BRITISH Film
832616 Item 1
1901 D.E.D. 41/39-52 (another filming) VAULT BRITISH Film
1408870
1901 D.E.D. 41/53-59 (another filming) VAULT BRITISH Film
1408871
1901 D.E.D. 41/60-70 (another filming) VAULT BRITISH Film
1408872
1901 D.E.D. 41/71-75 (another filming) VAULT BRITISH Film
1408873
1901 D.E.D. 41/76-77 (another filming) VAULT BRITISH Film
1408874 Item 1
1901 D.E.D. 42/7-8, 23, 2-5, 7, 14-16, 1, 6 FHL BRITISH Film
832616 Item 2
1901 D.E.D. 42/10, 13, 11a, 12, 17-19, 9, 20-22, 24-25 FHL BRITISH Film
832617 Item 1
1901 D.E.D. 42/1-7b (another filming) VAULT BRITISH Film
1408874 Item 2
1901 D.E.D. 42/7b (cont.)-22 (another filming) VAULT BRITISH Film
1408897
1901 D. E. D. 42/23-25 (another filming) VAULT BRITISH Film
1408898 Item 1
1901 D.E.D. 46/58 FHL BRITISH Film
832623 Item 2
1901 D.E.D. 46/60-61, 59 FHL BRITISH Film
832624
1901 D.E.D. 46/62-64 FHL BRITISH Film
832625