![...](https://files.ingeniumcanada.org/items/coll/134/830/2004-0385-001-aa-cs_thumb.jpeg)
Roll, spectrogram
2004.0385.001
![...](https://files.ingeniumcanada.org/items/coll/134/832/2004-0385-002-aa-cs_thumb.jpeg)
Roll, spectrogram
2004.0385.002
![...](https://files.ingeniumcanada.org/items/coll/134/833/2004-0385-003-aa-cs_thumb.jpeg)
Roll, spectrogram
2004.0385.003
![...](https://files.ingeniumcanada.org/items/coll/134/834/2004-0385-004-aa-cs_thumb.jpeg)
Roll, spectrogram
2004.0385.004
![...](https://files.ingeniumcanada.org/items/coll/134/835/2004-0385-005-aa-cs_thumb.jpeg)
Roll, spectrogram
2004.0385.005
![...](https://files.ingeniumcanada.org/items/coll/134/836/2004-0385-006-aa-cs_thumb.jpeg)
Roll, spectrogram
2004.0385.006
2004.0385.001
2004.0385.002
2004.0385.003
2004.0385.004
2004.0385.005
2004.0385.006