Describe visible details before interpreting them. Compare a crop with the complete image. Ask who wrote a caption, when it was added and what evidence supports it. An image date, an event date and a caption date can differ. Neither a confident label nor several copies makes an identification certain.
Worked example
A crop shows one occupied desk. The full sketch shows that desk and two empty desks. The crop does not establish a full room. A label added in 2000 says Exhibition, 1960, but supplies no source. The label records a claim; it does not by itself date the sketch or establish the event.
The fictional chair drawing
Drawing A is undated and has no event name. It depicts seven chairs: chairs 1-4 occupied and chairs 5-7 empty. Crop B keeps only chairs 1-4, without changing their details. No other seats or times are shown. A caption added in 1996 reads Concert, 1956. The folder does not identify the caption writer or provide evidence for that event and year. Two newsletters repeat the caption without adding sources. The drawing, caption and records are invented, not a real concert photograph.