 Dahl's employment involved several journeys in Sweden and abroad, where he collected natural history specimens both for Alströmer and himself.During that time, Alströmer received several plants from Linnaeus himself, and Dahl was able to review the Linnean collection, which is now included in the collections of the Swedish Museum of Natural History in Stockholm.In 1781, Alströmer provided the financial backing for Linnaeus's son, Carl Linnaeus the Younger, to journey to England; on the Younger's death in 1783, Linnaeus sent Alströmer the "herbarium parvum".