Johannes Frerck was a friendly man who sold sausages and sauerkraut from his Darlinghurst shop  he was also a staunch supporter of Adolf Hitler and branded a spy who threatened Australia's security.

Johannes Frerck was a friendly man who sold sausages and sauerkraut from his Darlinghurst shop he was also a staunch supporter of Adolf Hitler and branded a spy who threatened Australia's security.

Treasure Trove: The Sydney delicatessen owner who led the Nazis in Sydney during the lead-up to Worl

The story behind some of the items from our National Institutions.

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Treasure Trove: The Sydney delicatessen owner who led the Nazis in Sydney during the lead-up to Worl

Treasure Trove: The Sydney delicatessen owner who led the Nazis in Sydney during the lead-up to Worl