Virgil Rabb Letter (1865)
Tape removal
Before Treatment

Recto, spectral light |

Verso, spectral light |

Recto, raking light |
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|
|

Verso, raking light |

Transmitted light |

Detail |
During Treatment
After Treatment

Recto, spectral light |

Verso, spectral light |

Recto, raking light |
|
|
|

Verso, raking light |

Transmitted light |

Detail |
|