There were very few of them at that time. About once a month I received a newsletter from Programmer's Paradise which I probably signed for somewhere, then some "adults only" links (message was empty) from a members.xoom.com address, then the usual "enlarge it" spam.
Here's an example (addresses probably fake or long dead, but redacted anyway):

--------------------------------

From: XXXX@123india.com
To: "XXXX@yesitsmail.net"<>
Subject: YeS It Works!.....Gotta Have It 15643
Date: Wed, 18 Nov 1998 02:53:45 -0500
X-Mailer: QUALCOMM Windows Eudora Pro Version 4.1

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----------------------------

That spam contained also some quoted text coming from a yahoogroups list I was part of with a bunch of old friends, so either some of them or the server were compromised and spitting out our addresses.

Spamming was occasional at that time, and I probably deleted most of them, but in a few years it became unsustainable and I installed IpCop to identify junk and redirect it to its own folder.

One more example:

--------------------------

From: "InvestTXXXX@uasc.com.kw" <InvestXXXX@uasc.com.kw>
To: "XXXX@prodigy.com" <XXXX@prodigy.com>
Reply-To: <XXXXXGreatPicksDaily@trk.kht.ru>
Subject: Fwd: Investor's Alert
Date: Sun, 9 Jun 2002 21:07:41 -0400

Immediate Release

Cal-Bay (Stock Symbol: CBYI) Watch for analyst "Strong Buy Recommendations" and several advisory newsletters picking CBYI. CBYI has filed to be traded on the OTCBB, share prices historically INCREASE when companies get listed on this larger trading exhange. CBYI is trading around $.30¢ and should skyrocket to $2.66 - $3.25 a share in the near future. Put CBYI on your watch list, acquire a postion TODAY.

REASONS TO INVEST IN CBYI
• A profitable company, NO DEBT and is on track to beat ALL earnings estimates with increased revenue of 50% annually!
• One of the FASTEST growing distributors in environmental & safety equipment instruments.
• Excellent management team, several EXCLUSIVE contracts. IMPRESSIVE client list including the U.S. Air Force, Anheuser-Busch, Chevron Refining and Mitsubishi Heavy Industries, GE-Energy & Environmental Research.

RAPIDLY GROWING INDUSTRY
Industry revenues exceed $900 million, estimates indicate that there could be as much as $25 billion from "smell technology" by the end of 2003.

ALL removes HONERED. Please allow 7 days to be removed and send ALL address to: XXXXXAgain@btamail.net.cn

Certain statements contained in this news release may be forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. These statements may be identified by such terms as "expect", "believe", "may", "will", and "intend" or similar terms. We are NOT a registered investment advisor or a broker dealer. This is NOT an offer to buy or sell securities. No recommendation that the securities of the companies profiled should be purchased, sold or held by individuals or entities that learn of the profiled companies. We were paid $27,000 in cash by a third party to publish this report. Investing in companies profiled is high-risk and use of this information is for reading purposes only. If anyone decides to act as an investor, then it will be that investor's sole risk. Investors are advised NOT to invest without the proper advisement from an attorney or a registered financial broker. Do not rely solely on the information presented, do additional independent research to form your own opinion and decision regarding investing in the profiled companies. Be advised that the purchase of such high-risk securities may result in the loss of your entire investment. The owners of this publication may already own free trading shares in CBYI and may immediately sell all or a portion of these shares into the open market at or about the time this report is published. Factual statements are made as of the date stated and are subject to change without notice. Not intended for recipients or residents of CA,CO,CT,DE,ID, IL,IA,LA,MO,NV,NC,OK,OH,PA,RI,TN,VA,WA,WV,WI. Void where prohibited. Copyright c 2001 *

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edit: formatting to make headers readable.