Comparison of stock prices for selected trade and business information companies, 6/30/04-12/31/03-6/30/03.

                        Price on   Price on      % Change
Company                  6/30/04   12/31/03   from 12/31/03

Dow Jones (NY)            $45.10     $49.85       -9.5%
Dun & Bradstreet (NY)      53.91      50.71       +6.3
Equifax (NY)               24.75      24.50       -0.1
Gartner (NY)               13.22      11.31      +16.9
Info. Holdings (NY)        27.37      22.10      +23.9
Knight-Ridder (NY)         72.00      77.37       -6.9
McGraw-Hill (NY)           76.57      69.92       +9.5
Moody's (NY)               64.66      60.55       +6.8
Pearson (NY)               12.48      11.21      +11.3
Primedia (NY)               2.78       2.83       -1.8
Reed (NY)                  39.35      33.70      +16.8

Rogers (NY)                18.13      16.50       +9.9
John Wiley (NY)            32.00      26.11      +22.6
CNET (N)                   11.07       6.82      +62.3
Reuter (N)                 40.78      25.35      +60.9
Scholastic (N)             29.95      33.45      -10.50
United Bus. (N)             8.25       8.80       -6.3
Value Line (1) (N)         35.91      49.90      -28.0
Thomson (T)                33.46      36.43       -8.2
Elsevier (AM)              11.54      12.41       -7.0
VNU (AM)                   23.87      31.56      -24.4
Wolters Kluwer (AM)        18.47      15.83      +16.7
Penton Media (OTCS)         0.41       1.36      -69.8

Totals:                   696.03     678.57       +2.57%
DJIA:                   10435.48   10453.92       -0.18%

                        Price on     % Change
Company                  6/30/03   from 6/30/03

Dow Jones (NY)             43.03       +4.8%
Dun & Bradstreet (NY)      41.10      +31.2
Equifax (NY)               26.00       -4.8
Gartner (NY)                7.58      +74.4
Info. Holdings (NY)        18.25      +50.0
Knight-Ridder (NY)         68.93       +4.5
McGraw-Hill (NY)           62.00      +23.5
Moody's (NY)               52.71      +22.7
Pearson (NY)                9.37      +33.2
Primedia (NY)               3.05       -8.9
Reed (NY)                  33.69      +16.9
Rogers (NY)                16.05      +13.0
John Wiley (NY)            26.25      +21.9
CNET (N)                    5.95      +86.1
Reuter (N)                 17.48     +133.3
Scholastic (N)             29.78       +0.6
United Bus. (N)             5.00      +65.0
Value Line (1) (N)         49.00      -26.7
Thomson (T)                31.47       +6.3
Elsevier (AM)              11.83       -2.5
VNU (AM)                   30.89      -22.7
Wolters Kluwer (AM)        12.09      +52.8
Penton Media (OTCS)         0.59      -30.5

Totals:                   602.09      +15.60%
DJIA:                    8985.44      +16.14%

NY-New York Stock Exchange; N-NASDQ; T-Toronto; AM-Amsterdam.
1-A one-time dividend of $17.50 per share was paid at the end
of May, 2004.