Here is a link to a chart of the sulphur content of foods. My one complaint about is is that it shows the sulphus content per 100 grams, and not the sulphur content per 100 calories. Due to this, foods that are high in water content like milk or yogurt appear low on the chart, but if you look at the numbers for hard cheeses for example, the numbers are much higher.

http://www.healthyeatingclub.com/info/books-phds/books/foodfacts/html/data/data5g.html