Top sources for the Top Stories

Dominating the Google News home page when you first view it are their "Top Stories". And dominating these are at least two news sites listed as the top sources. This is the best exposure a news site could aim for.
The columns in the lists below are ranking, appearances noted by Newsknife as No.1 source in the first Top Story, and the second Top Story. The full lists of 30 and 68 sites are in the Newsknife Members' Area.
July only:
      1      7        4  Reuters
      2      5        2  Los Angeles Times
      3      4        1  PC Magazine
      4      3        3  Wall Street Journal
      5      4        0  ComputerWorld
      6      1        3  Bloomberg

Year to August :
      1    28      20  Reuters
      2    16        9  Wall Street Journal
      3    14      10  Los Angeles Times
      4    11        9  Christian Science Monitor
      5    10        8  CBS News
      6      7      13  USA Today