Just to be annoyingly complete ;P
There are Four releases of TWHF.
1) SS version with nothing printed on the velum, 15 tracks (one not listed) released ca. 1991
2) SS version with album and band info printed on the velum--otherwise identical to SS release number one, released around the same time
3) IRS release with no velum and a bigger shot of the front page artwork, 17 tracks (one not listed) ca. 1995 Also note the second "l" added to the word 'Til when the apostrophe was dropped. In theory, this would be the most rare since it's the only version of the four to have the extra songs, but in reality, I think it's the version one most commonly comes across.
4) SS "no booklet" release from the band which reinstated the "Paul and Virginia on the swing" painting by Cot to the back insert, released ca. 1995 and reverted back to the original 14 tracks, but still used the "Till" version of the title from the IRS release of the same name.
And that's not even counting the cassette and promo versions that MUST be included in my collection. BTW, if anyone has extras...

M