A1-4 Scourge of the Slave Lords by various
B1-9 In Search of Adventure by various
GDQ1-7 Queen of the Spiders (Giants, Drow, Queen) by Gary Gygax
I3-5 Desert of Desolation by various
S1-4 Realms of Horror by Gary Gygax and Lawrence Schick
T1-4 Temple of Elemental Evil by Gary Gygax with Frank Mentzer

The links will send you to the individual modules' pages.

Most of these were a great idea; combine modules in a cohesive series into one easy-to-reference source.  Many also incorporated minor fixes and tweaks to the original modules, and in the case of T1-4 Temple of Elemental Evil brought to light entirely new material (there never were any modules T2 - T4).  However, B1-9 and S1-4 are rather cheap (and abbreviated) versions of modules that had no connecting plot or theme anyway.

Three of the supermodules were slightly edited to form a contiguous series; T1-4 leads to A1-4 which leads to GDQ1-7.  The material in A1-4 Scourge of the Slave Lords was revised to bring the target character levels to 7-11, thereby making the continuity from T1-4 Temple of Elemental Evil a bit smoother.

B1-9 In Search of Adventure includes the map to module B1 In Search of the Unknown, but no descriptive text for this module (other than the short note on pg 23).  The remaining B series modules (listed in the order they appear in B1-9) are:

B9 Castle Caldwell (four of the five short adventures)
B8 Journey to the Rock (one of the three possible trails to The Rock)
B2 The Keep on the Borderlands (Caves of Chaos only, no Keep)
B3 Palace of the Silver Princess (intact)
B5 Horror on the Hill (the adventure in the Hill only, no lead-in encounters)
B7 Rahasia (intact)
B4 The Lost City (upper five pyramid tiers)
B6 The Veiled Society (intact)

Thanks to Aaron McPherson and Eric Pass for this info.

T1-4 Temple of Elemental Evil contains the full version of T1 Village of Hommlet.  T1-4 remains one of the most popular modules ever produced, and was printed well into the advent of 2nd Edition AD&D.  Interestingly, the cover art to AC5 Player Character Record Sheets was initially considered as the cover for T1-4; it depicts the first encounter outside the abandoned moathouse.  (Thanks to Paul Stormberg for this info).  Making this even wackier is the "official" pre-production cover (viewable here), which depicts something else entirely.  Thanks to Alban Jalabert for this scan.

Printing Information

The only discernable different supermodule printings we've seen are B1-9 In Search of Adventure, S1-4 Realms of Horror, and T1-4 Temple of Elemental Evil.

B1-9 In Search of Adventure

• First:  TSR UK address on back is "The Mill, Rathmore Road".

• Second:  TSR UK address on back is "120 Church End, Cherry Hinton".

Thanks to Michael Deaton for this info.

I3-5 Desert of Desolation

S1-4 Realms of Horror

• First:  TSR UK address on back is "The Mill, Rathmore Road".

• Second:  TSR UK address on back is "120 Church End, Cherry Hinton".

Thanks to Michael Deaton for this info.

T1-4 Temple of Elemental Evil

• First (1985): Angled TSR logo on front cover, bottom center.  Several errors are present in the text, most having to do with truncated sentences; for example, on page 9, location 13 states: "The shop is run by one Rannos Davl, who is bed..." and "If the group does not hire one, the their activities by any means possible...".  Does not have "May 1987" at the bottom of the first page.  Rear cover has Product Number and ISBN stacked over the bar code; Piece Code on the bottom left.  The most common (largest) printing.  Note:  A version with a solid-blue spine and a slightly-greenish cast to the cover has also been spotted, with no other cover or internal differences.  This differing version appears to be quite a bit more rare than the "normal" version; unknown which version was actually printed first.

• Second:  Angled TSR logo on front cover, bottom center.  Textual errors have now been corrected.  Does not have "May 1987" at the bottom of the first page.  Rear cover has Product Number and ISBN stacked over the bar code; Piece Code on the bottom left.

• Third:  Angled TSR logo on front cover, bottom center.  Textual errors corrected.  Does not have "May 1987" at the bottom of the first page.  Rear cover has Product Number within the bar code, no ISBN, and Piece Code on the bottom left.

• Fourth (1987):  Angled TSR logo on front cover, bottom center.  Textual errors corrected.  Has "May 1987" at the bottom of the first page (credits page still has "1985" on it, however).  Rear cover has Product Number within the bar code, no ISBN, and Piece Code on the bottom left.

• Fifth:  Angled TSR logo on front cover, bottom center.  Textual errors corrected.  Has "May 1987" at the bottom of the first page (credits page still has "1985" on it, however).  Rear cover has no Product Number, ISBN above the bar code, and Piece Code on the bottom left.

• Sixth (1991):  Gold Angled TSR logo, front cover bottom center.  Rear cover has no Product Number, ISBN above the bar code, and Piece Code on the bottom left.

• Seventh (1992):  Gold Angled TSR logo, front cover bottom left.  Rear cover has no Product Number, ISBN within the bar code, and Piece Code on the bottom left.

Thanks to Steve Blodgett, Shannon Crack, Michael Deaton, Wayne Gralian, John Huckerby, Rene Hurka, John Kowalewski, Mike Kuo, Stéphane Tanguay, and Morey Winnett for this info, and to Michael Deaton for the scans of I3-5 and T1-4 Fifth and Sixth prints.

Scourge of Slave Lords	In Search of Adventure	Queen of the Spiders	Desert of Desolation
Realms of Horror	Temple of Elemental Evil (1st - 5th prt)	Temple of Elemental Evil (6th prt)	Temple of Elemental Evil (7th prt)