What does Kurtz entrust Marlow?

Kurtz entrusts Marlow with a packet of papers and a photograph.

One morning he gave me a packet of papers and a photograph,—the lot tied together with a shoe-string. 'Keep this for me,' he said. 'This noxious fool' (meaning the manager) 'is capable of prying into my boxes when I am not looking.'

I kept the bundle of papers given me by Kurtz, not knowing exactly what to do with it. His mother had died lately, watched over, as I was told, by his Intended.

"Thus I was left at last with a slim packet of letters and the girl's portrait. She struck me as beautiful—I mean she had a beautiful expression. I know that the sunlight can be made to lie too, yet one felt that no manipulation of light and pose could have conveyed the delicate shade of truthfulness upon those features. She seemed ready to listen without mental reservation, without suspicion, without a thought for herself. I concluded I would go and give her back her portrait and those letters myself.