Looking at that again I noticed something very interesting:
Here's a definition of the word incorporated
Incorporate \In*cor"po*rate\, v. t. [imp. & p. p. Incorporated; p. pr. & vb. n. Incorporating.]
1. To form into a body; to combine, as different ingredients. into one consistent mass.
By your leaves, you shall not stay alone, Till holy church incorporate two in one. --Shak.
2. To unite with a material body; to give a material form to; to embody.
The idolaters, who worshiped their images as golds, supposed some spirit to be incorporated therein. --Bp. Stillingfleet.
3. To unite with, or introduce into, a mass already formed; as, to incorporate copper with silver; -- used with with and into.
4. To unite intimately; to blend; to assimilate; to combine into a structure or organization, whether material or mental; as, to incorporate provinces into the realm; to incorporate another's ideas into one's work.
The Romans did not subdue a country to put the inhabitants to fire and sword, but to incorporate them into their own community. --Addison.
5. To form into a legal body, or body politic; to constitute into a corporation recognized by law, with special functions, rights, duties and liabilities; as, to incorporate a bank, a railroad company, a city or town, etc.
Source: Webster's Revised Unabridged Dictionary (1913)
Up until now I was under the impression that SANFL port (pre 97) were the same as Port Power. I was just arguing that their flags were irrelevant to the AFL. But having read an AFL printed statement, I have found proof that the Port Adelaide Power were created in 1996.
No your initial impression was correct. Either that or the Richmond Football Club is only 30 years old and has only has one senior premiership.
From http://www.search.asic.gov.au/cgi-bin/gns030c?acn=005_563_011&juris=9&hdtext=ACN&srchsrc=1
Name RICHMOND FOOTBALL CLUB LIMITED
ACN 005 563 011
Type Australian Public Company, Limited By Guarantee
Registration Date 21/06/1979
And from http://www.search.asic.gov.au/cgi-bin/gns030c?acn=068_839_547&juris=9&hdtext=ACN&srchsrc=1
Name PORT ADELAIDE FOOTBALL CLUB LIMITED
ACN 068 839 547
Type Australian Public Company, Limited By Guarantee
Registration Date 29/03/1995