WESCO DISTRIBUTION INC

Notice of Effectiveness

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933

Notice of Effectiveness

Prospectus Supplement for Primary Offering

Registration statement under Securities Act of 1933

Registration of Securities on Exchange

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933 (amendment)

Registration statement under Securities Act of 1933

Notice of Effectiveness

Automatic Shelf Registration

Post-effective amendment to a registration statement

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Post-effective amendment to a registration statement

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Post-effective amendment to a registration statement

VARESCHI WILLIAM J JR

LIN SANDRA BEACH

CHESHIRE MICHAEL J

MILES GEORGE L JR

TARR ROBERT J JR

WAY KENNETH L

DUGANIER ALLAN A

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC