bibliography - Canadian Military History

12,473. 43. Author Unknown. Errors in plotting, telling, and recording under operational
conditions, II. No Date. No PRO number.
12,474. 44. Author Unknown. Hostile and unidentified raids, Dundee Observer Centre Area,
night of 27/28 June 1940. No Date. No PRO number.
12,475. 45. Author Unknown. Telling and recording in operations rooms (draft and redraft). No
Date. No PRO number.
12,476. 46. Author Unknown. Operational efficiency of teleprinters in No 11 Group area. No
Date. No PRO number.
12,477. 47. Author Unknown. Tracking and identification of bombing raids on Norfold, 10 July
1940. No Date. No PRO number.
12,478. 48. Author Unknown. Proposed test of time lag in plots between Observer Centre and
Operations Rooms by teleplotting on speech plotting. No Date. No PRO number.
12,479. 49. Author Unknown. Transmission of sea plots to Aberdeen Observer Centre from Wick
Filter Room. No Date. No PRO number.
12,480. 50. Author Unknown. RDF operational system. No Date. No PRO number.
12,481. 51. Author Unknown. RDF for ground controlled interception GCI. No Date. No PRO
number.
12,482. 52. Author Unknown. 11 Group operations room. No Date. No PRO number.
12,483. 53. Author Unknown. Raids in Coventry Observer Centre Area, 20 August 1940. No
Date. No PRO number.
12,485. 55. Author Unknown. Method of construction of intelligence tracings. No Date. No PRO
number.
12,486. 56. Author Unknown. Observation Corps information on Fighter Command. No Date.
No PRO number.
12,488. 58. Author Unknown. Telling to Group and Command, and display of mass aerial
activity. No Date. No PRO number.
12,489. 59. Author Unknown. Requirements for apparatus in new "R" blocks. No Date. No PRO
number.
12,490. 60. Author Unknown. Use of two filter room letters for 11 Group area. No Date. No
PRO number.