
Figure 1
Ria Kuyken attacked by a circus bear (1962). Photo taken from De Boer Collection (collection Fotopersbureau De Boer, 01806A00_08, Noord-Hollands Archief).

Figure 2
The logs of four days in 2001. In this period, we see many photographed events per day and a strong regional focus with almost all photos sold to the local newspapers Haarlems Dagblad and IJmuider Courant. Picture taken by Paul Maessen (Noord-Hollands Archief).

Figure 3
One side of the subject index card ‘first post’. This refers to pictures of the first post in the ground construction, illustrating that the agency did not just take photographs of the unique and extraordinary but also of the mundane.
Table 1
Top 10 topics (out of ca. 1.500) of the subject index cards of Fotopersbureau De Boer (1945-1990), with the number of cards.
| Subject | Number of cards |
|---|---|
| Persons | 141 |
| Soccer | 74 |
| Buildings: exterior | 64 |
| Portraits | 60 |
| Openings, commissioning | 59 |
| Schools | 49 |
| Music | 40 |
| Fire, fire brigade | 36 |
| Buildings: interior | 35 |
| Construction works | 35 |

Figure 4
Scene Prediction. The model correctly classified the picture as ‘Dining Room’. The predicted labels ‘portrait_group’ and ‘marriage’ also apply.

Figure 5
The distribution of scene categories that appeared more than fifty times in the pilot training set. We used this annotated set to re-train the places-365 model.
