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1. Organization chart - Central Operations Office
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50 KB
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2. View of Interior of Central Operations Office, Pittsburg, Kans
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141 KB
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3. Portfolio cover - A1 Agriculture Questionnaire
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61 KB
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4. Reference note (Form 2-36). Used for referring questions for technical review
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91 KB
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5. Verification record (Form 2-43). For recording errors for editing and coding
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42 KB
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6. Punch cards used for the 1954 Census of Agriculture
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99 KB
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7. IBM type 024 Punching Machine
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61 KB
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8. C cards punched per hour by weeks of experience, Pittsburg Operations Office
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76 KB
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9. H cards punched per hour by weeks of experience, Detroit Operations Office
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63 KB
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10. Machine used for verifying punched cards
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53 KB
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11. IBM type 077 collator
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66 KB
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12. IBM type 082 sorting machine
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67 KB
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13. IBM type 101 counting and tabulating machine
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72 KB
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14. IBM type 402 tabulating machine
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73 KB
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15. IBM type 407 accounting machine
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71 KB
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16. IBM type 514 reproducing, gang-punching, summary punch machine
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70 KB
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17. Census machine 487 and 489, multi-column sorter and unit tabulator
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79 KB
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18. Census machine 488, multi-column sorter
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79 KB
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19. Census machine 581, unit tabulator
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82 KB
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20. Census machine 582, multi-column sorter and unit tabulator
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82 KB
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21. Illustrative example of wiring diagram, type 101, control panel
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100 KB
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22. Illustrative example of wiring diagram, type 402-403, control panel
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188 KB
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23. Illustrative example of wiring diagram, type 407, control panel
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128 KB
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24. Illustrative example of wiring diagram, unit counter 101
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36 KB
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25. Test decks of cards used to discover tabulating machine errors
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61 KB
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26. Evaluation program - Location 319 counties comprising sample used in evaluating completeness of enumeration
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131 KB
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27. Aerial view with sample segment delineated
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139 KB
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