Onsberg has gone through life armed with brush and paints, and has always gone his own way.
Onsberg has been exhibited with large success during the last four decades, and found a vast audience of Onsberg collectors around the world.Work included in public collections
National- and Moderna museet, Stockholm - G?teborgs konstmuseum - Malm? Museum - Helsingborgs Museum- J?nk?pings l?ns Museum
- Hallands Museum - Landskrona Museum - Kalmar Konstmuseum
- Skissernas Museum, L und - Ystads Konstmuseum - Varbergs Museum - H?gan?s Museum - Stora Kopparbergs Museum - Vetlanda Museum - Swedish Embassy, London - Volvo, Gothenburg -SAS, Stockhom- S-E Bankens Permanenta Samlingar - Marriot Crystal Gateway Hotel, Washington D.C. - Sheraton Central Park Hotell, Dallas - Parker House Hotel, Boston - IBM Federal Systems - The Riggs International Bank - Price Waterhouse, Washington D.C.
- Communication Workers of America, San Francisco - General Electric Corp., Fairfax and many more.