Architectural drawing after restoration

The plastic tape has been removed and repositioned, replacing the fatty adhesive by an acrylic one applied remoistening the heat-set conservation adhesive.
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Ink architectural drawing on tracing paper. Meridiana Greyhound Track (Barcelona), by architect Bonet Castellana (c. 1960). Association of Architects of Catalonia (CoAC). More about Degradation mechanisms on pressure sensitive tapes or about the conservation treatment of this particular architectural drawing on tracing paper.