Possibly only one and most complete publication history of Sleazenation magazine up to mid 2001. Some guessing took a place since few issues seem to not exist on the web (like September 1998 which according to numeration should exist actually). Bolded are magazines currently in my collection.

1996, Volume 1

Volume 1, Issue 1 - October 1996
Volume 1, Issue 2 - November 1996
Volume 1, Issue 3 - December 1996/January 1997

1997, Volume 1

Volume 1, Issue 4 - February 1997
Volume 1, Issue 5 - February/March 1997
Volume 1, Issue 6 - March/April 1997
Volume 1, Issue 7 - April/May 1997
Volume 1, Issue 8 - May/June 1997
Volume 1, Issue 9 - June/July 1997
Volume 1, Issue 10 - July/August 1997
Volume 1, Issue 11 - August/September 1997
Volume 1, Issue 12 - October/November 1997 (i think)

1998, Volume 2

Volume 2, Issue 1 - December 1997/January 1998
Volume 2, Issue 2 - February 1998
Volume 2, Issue 3 - March 1998
Volume 2, Issue 4 - April 1998
Volume 2, Issue 5 - May 1998
Volume 2, Issue 6 - June 1998 (damaged unfortunately)
Volume 2, Issue 7 - July/August 1998
Volume 2, Issue 8 - September 1998 (does it even exist?)
Volume 2, Issue 9 - October 1998 (Banky fanatics ruined prices forever)
Volume 2, Issue 10 - November 1998
Volume 2, Issue 11 - December 1999

1999, Volume 2

Volume 2, Issue 12 - January 1999
Volume 2, Issue 13 - February 1999
Volume 2, Issue 14 - March 1999
Volume 2, Issue 15 - April 1999
Volume 2, Issue 16 - May 1999
Volume 2, Issue 17 - June 1999
Volume 2, Issue 18 - July 1999
Volume 2, Issue 19 - August 1999
Volume 2, Issue 20 - September
Volume 2, Issue 21 - October 1999
Volume 2, Issue 22 - November 1999
Volume 2, Issue 23 - December 1999

2000, Volume 2 and 3

Volume 2, Issue 24 - January 2000
Volume 3, Issue 1 - February 2000
Volume 3, Issue 2 - March 2000
Volume 3, Issue 3 - April 2000
Volume 3, Issue 4 - May 2000
Volume 3, Issue 5 - June 2000
Volume 3, Issue 6 - July 2000
Volume 3, Issue 7 - August 2000
Volume 3, Issue 8 - September 2000
Volume 3, Issue 9 - October 2000
Volume 3, Issue 10 - November 2000
Volume 3, Issue 11 - December 2000/January 2001

2001, Volume 4 (Here comes Scott King)

Volume 4, Issue 1 - February 2001
Volume 4, Issue 2 - March 2001
Volume 4, Issue 3 - April 2001
Volume 4, Issue 4 - May 2001
Volume 4, Issue 5 - June 2001
Volume 4, Issue 6 - July 2001
Volume 4, Issue 7 - August 2001
Volume 4, Issue 8 - September 2001
Volume 4, Issue 9 - October 2001
Volume 4, Issue 10 - November 2001
Volume 4, Issue 11 - December 2001

If I'm wrong with something and you actually got these issues or just know proper issue numbers - hit me up on my e-mail.