From the introduction text:

"In the consistory rooms of most Afrikaans Reformed churches, portraits usually hang of the ministers who have served in those specific congregations over the years. These photographs not only depict the history of the succession of pastors, but also visually convey practices in ministry, customs, and even clothing styles/fashions. The consistory, with its row of portraits, also imprints the image of ecclesiastical authority and stands in contrast to the traditional austere decoration—or even the absence thereof—in the rest of the church interior..."