abctoo wrote:Are you attributing these Australian Explorer covers to Sheard because he is the addressee?
Well, that is an interesting
Yes, I am "attributing these to Sheard because he is the addressee" - although I admit to doing so without extensive thought: other than to say, in general, that many unbranded Australian Commemorative and First Day Covers are identified based on the Addressee (especially where a pre-Stamped Address is used), in those cases, usually as the Cachet Producer. However, in this case, these covers are clearly Produced by the Royal Geographical Society of Australasia (Queensland) [hereafter RGSAQ] and that Saville Sheard as the addressee was the customer.
It is not too great a mystery as to how Mr Sheard managed to place his Stamped Address on these envelopes. These envelopes were available in advance for supply to customers, so Sheard would have readily been able to obtain envelopes in advance to attach his Address - there are many similar examples of this for RGSAQ covers e.g. with stamp addressed to Rex Bodin (see below). The pre-addressed envelopes would then be post-marked by the RGSAQ and sent to the customer.
RGSAQ Cover to Captain Cook, 9 June 1946, with Stamp Address to Rex Bodin.
The scan below shows the Hunter Stamp Co. mailing address (Mrs. H.O. Rock, 254 Maitland Rd, Islington, Newcastle, N.S.W.) on a similar one, for Leichhardt canceled ROPER RIVER / 24OC45 / NORTHERN TERRITORY. Were these covers prepared by Sheard, Hunter stamp or someone else?
As stated above, I believe those covers (shown below) were prepared by Saville Sheard. Your cover (above) may have been prepared either by Hunter Stamp Co or by the RGSAQ because either could prepare the typewritten address [more examples, and forensic-type examination, would be needed to determine precisely whom].
The last group of Saville Sheard covers that I have are Royal Geographical Society of Australiasia (Queensland) items:
All have the same stamped address of his home "S.H.Sheard, Lama St. Chelmer, Queensland".
1) Mitchell exploration Commemoration, Blackall, 19 Sep. 1946
2) Mitchell exploration First Day Cover, Blackall, 14 Oct. 1946
As you noted there is a clear difference between the two Mitchell covers above. The first is for the Commemoration on 19 September 1946 of the exploration of Major Mitchell, while the second is for the First Day of Issue of the Mitchell series stamps on 14 October 1946 - and it has a "FIRST DAY COVER" stamp on it, probably added by Saville Sheard.
Also, below is a similar cover stamped Royal Geographical Society of Australia for the 21st Birthday of Elizabeth as British Heir Presumptive. It is a first day of the stamp, canceled 20NO47. I do not know anything about the recipient.
In this case, I am not familiar with this recipient. However, the RGSAQ did make these covers available we in advance of the issue date. This FDC would appear to simply have been prepared and posted by someone at Parkside, SA (South Australia).