The eight slogans used at Adelaide are:
    
      - SEND A TELEGRAM;
- SEND GREETINGS BY TELEGRAM;
- SEND BIRTHDAY GREETINGS BY TELEGRAM;
- CONVEY CONGRATULATIONS ....
- HAPPY THOUGHTS;
- TELEGRAMS: SPEEDY, RELIABLE, EFFECTIVE.
- 100 YEARS OF TELEGRAPH SERVICE;
- OVERLAND TELEGRAPH LINE CENTENARY.
- A TELEGRAPHIC CODE ADDRESS ...
The hyperlinks divert to the main Sydney pages or to details below of the three slogans used at Sydney but for which only a few examples of each have been recorded.
    HAPPY THOUGHTS ....
    
      
        | Datestamp: Box. Number: 1. Top inscription: SYDNEY/N.S.W. AUST. Base inscription:POSTED IN/CIRCULAR BOX.
 Characteristics: Die 1B:   Has ! mark after THOUGHTS.
 Recorded dates of this format: 19 December 1940.
 Number in the Census: 1. |  19 December 1940 with correct orientation for !
 | 
      
        | Datestamp: Box. Number: 1. Top inscription: SYDNEY/N.S.W. AUST. Base inscription:POSTED IN/SUBURBAN BOX.
 Characteristics: Die 1B:   Has ! mark invertedafter THOUGHTS.
 
 Recorded dates of this format: 23  December 1941.
 Number in the Census: 1.  Detail of this very rare error.
 Only occurred in Box 1 strikes.
 |  23 December 1940 at 5:00 pm.
 Die 1B: Error in the slogan.
 | 
      
        | Datestamp: Box. Number: 9. Top inscription:SYDNEY.
 Base inscription:N.S.W. AUST.
 Characteristics: Die 1A:   Has ! mark after THOUGHTS.
 Recorded dates of this format: 21 and 24 December 1940.
 Number in the Census: 2.            |  21 December 1940.
 | 
 
    TELEGRAMS: SPEEDY, RELIABLE, EFFECTIVE.
    Eight dies were used for this slogan for Sydney. These spanned the period 4 September 1939 and 29 April 1941 (at least). There appears to have been a gap in the use of this slogan at Sydney between 5 September 1939 and 4 January 1941. Only at Melbourne was this slogan used during this intervening period and then only in July 1940.
    All date stamps for Sydney were boxed.
    The main variations are:
    
      - the code number (1, 2, 8 plus no number are recorded);
- the inscription at the base. There are six variations see the Table below. 
 
- the relative positions of the first E of TELEGRAMS relative to the R of Reliable and the E of Effective. In seven of the eight dies, the R is directly above the E.
The listing below is  approximately chronological by type of date stamp and then  Code number  within that grouping. The following Table provides a guide with hyperlinks:    
    
      
        
          | Words at the base | Code number | Earliest date | Latest date | % of Sydney Census | 
        
          | IN PILLAR BOX | 1 | 19 January 1941 | 24 April 1941 | 15% | 
        
          |  | 2 | 4 September 1939 | 6 September 1939 | 15% | 
        
          | PAID |  | 5 September 1939 | 22 April 1941 | 15% | 
        
          | NSW AUST | 1 | 5 September 1939 |  | 8% | 
        
          |  | 8 | 22 January 1941 | 20 April 1941 | 15% | 
        
          | COUNTRY SPL | None | 21 January 1941 |  | 8% | 
        
          | IN INTERSTATE BOX | 1 | 25 January 1941 | 21 April 1941 | 15% | 
        
          | IN SUBURBAN BOX | 1 | 21 April 1941 |  | 8% | 
      
    
There are 13 examples of this slogan for Sydney in the Census.
    
      
        | Date stamp: Box. Number: 1 (serif at top, 5 mm font).
           Top inscription: SYDNEY/N.S.W. AUST. Base inscription: POSTED IN/PILLAR BOX. Characteristics:Die 2: the R is indented but not the E(ffective).
 Only recorded date of this format: 24 April 1941.
 Number in the Census: 1.          
 |  24 April 1941.
 | 
    
    
      
        | Date stamp: Box. Number: 1 (serif at top, 5 mm font). 
           Top inscription: SYDNEY/N.S.W. AUST.(2nd line is an arc).
 Base inscription: POSTED IN/PILLAR BOX. Characteristics:Die 3: both the R and E are indented.
 Only recorded date of this format: 19 April 1941.
 Number in the Census: 1.  |  19 January 1941.
 | 
    
    
      
       | Date stamp: Box. Number: 2(serif at top, 5 mm font).
 Top inscription: SYDNEY/N.S.W. AUST.(2nd line is an arc).
 
 Base inscription: POSTED IN/PILLAR BOX. Characteristics:Die 3: both the R and E are indented.
 Earliest recorded date of this format: 4 September 1939.
 Latest recorded date of this format: 6 September 1939.
 Number in the Census: 2.           |  4 September 1939.
 | 
     
       | Date stamp: Box. Number: None.
          Top inscription: SYDNEY/N.S.W. Base inscription: PAID. Characteristics:Die 3: both the R and E are indented.
 Boxed date stamp in red.
 No TIME slug.
 Earliest recorded date of this format: 4 September 1939.
 Latest recorded date of this format: 6 September 1939.
 Number in the Census: 2.  |  5 September 1939.
 | 
 
    
      
        | Date stamp: Box. Number: 1.
           Top inscription: SYDNEY. Base inscription: N.S.W. AUST. Characteristics:Die 3: both the R and E are indented.
 Earliest recorded date of this format: 4 September 1939.
 Latest recorded date of this format: 6 September 1939.
 Number in the Census: 2.  |  5 September 1939.
 | 
      
        | Date stamp: Box. Number: 8. Top inscription: SYDNEY. Base inscription: N.S.W. AUST. Characteristics:Die 3: both the R and E are indented.
 Earliest recorded date of this format: 22 January 1941.
 Latest recorded date of this format: 20 April 1941.
 Number in the Census: 2.  |  22 January 1941.
 | 
      
        | Date stamp: Box. Number: None.  Top inscription: SYDNEY/N.S.W.AUST.
 Base inscription:POSTED IN/COUNTRY SPL.
 Characteristics:Die 3: both the R and E are indented.
 Only recorded date of this format: 21 January 1941.
 Number in the Census: 1. |  21 January 1941.
 | 
    
    
      
        | Date stamp: Box. Number: 1.
           Top inscription: SYDNEY/N.S.W.AUST.(2nd line is an arc).
 Base inscription:POSTED IN/INTERSTATE BOX.
 Characteristics:Die 3: both the R and E are indented.
 Earliest recorded date of this format: 25 January 1941.
 Latest recorded date of this format: 21 April 1941.
 Number in the Census: 2.          |  21 April 1941.
 | 
      
        | Date stamp: Box. Number: 1.
           Top inscription: SYDNEY/N.S.W. AUST. Base inscription:POSTED IN/SUBURBAN BOX.
 Characteristics:Die 3: both the R and E are indented.
 Only recorded date of this format: 21 April 1941.
 Number in the Census: 1. |  21 April 1941. | 
    
     
    OVERLAND TELEGRAPH CENTENARY: 1872 - 1972.
    
      
        | Date stamp: Box. Top inscription: SYDNEY.  Base inscription: N.S.W. AUST.           Earliest date recorded:            23 August 1972. 
 Latest date recorded:1 September 1972.
 Number in the Census: 3. |  23 August 1972.
 |