bipolar analysis of square (autorské portfolio : My Activities : Bipolar Activity)

Homage to Ben is homage to art (autorské portfolio : publikace a razítka)

Book about my butterfly (autorské portfolio : exponáty a publikace)

New JHK size (autorské portfolio : My Activities : Varia)

YES NO (autorské portfolio : publikace a razítka)

Keep your entomological experiences discretly only to yourself (autorské portfolio : My Activities : Varia)

JHK's Card for documentation of pure experiences (autorské portfolio : My Activities : Varia)

Stamp as touch (autorské portfolio : My Activities : Touch Activity)

I am waiting for your touch (autorské portfolio : publikace a razítka)

jhklandscape (autorské portfolio : My Activities : Land Activity)

Secret (autorské portfolio : publikace a razítka)

Landscape by J. H. Kocman (autorské portfolio : My Activities : Land Activity)