Exhibit 99.6

                             INTEROFFICE MEMORANDUM

June 5, 2000


TO:         ALL PRIMARK EMPLOYEES

FROM:       JOE KASPUTYS

SUBJECT:    THE MERGER OF PRIMARK and THOMSON FINANCIAL

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Primark Corporation and The Thomson Corporation have just executed a merger
agreement. A copy of the joint press release we issued this morning is attached.

I am very excited about this new opportunity for Primark and for us all.
Primark's leading businesses will join with those of Thomson to create a
financial information vendor that covers the globe with a complete product
offering. The fit between Primark and Thompson Financial is ideal, with the
combination providing both a scale of operation and access to resources that we
have never before enjoyed. Thomson recognizes that Primark's truly unique asset
is the dedication and caliber of our employees, who will have more opportunities
than ever before.

I strongly believe that Thomson Financial, with its industry expertise,
world-class content and significant resources, is the ideal partner for Primark.
Thomson Financial is excited about our future prospects and is committed to grow
our businesses. This includes further investments in the many promising
initiatives that are currently underway within Primark.

Once the merger is completed, I will assume the position of Chairman of Thomson
Financial. Other members of Primark's management team will also take on new
responsibilities, as we find ways to take advantage of joint capabilities. Both
the Primark management team and I will work closely with you to help insure a
successful and positive transition. We will begin planning for this transition
immediately, while the tender offer and regulatory approvals are in process.

Both the management at Primark and Thomson Financial believe this merger will be
a great benefit to the industry. The combination of our two companies will
significantly broaden our product line, and the increased scale and resources
will enable all of us to bring a wide range of innovative customer solutions to
market.






Memorandum
June 5, 2000
Page 2
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As important as this merger is, we must not let it distract us from our primary
mission of delivering top quality products and services to our customers. We
must press ahead with sales, product development, technology improvements and
all other critical programs within Primark to keep our business growing.

Your management team and I are committed to keep you fully informed on the
progress of our integration. In order to introduce you to our new colleagues, a
webcast will shortly be available with a message from me and the two top Thomson
Financial executives, Pat Tierney, president and chief executive officer, and
Sharon Rowlands, chief operating officer. We will provide you with updates as
they occur, either in person, through email or by way of a webcast.

In the meantime, it is "business as usual," with the Primark team proceeding
with the exciting initiatives we have underway.

Sincerely,

Joe Kasputys