Nice find, but one for the collection rather than for everyday use.
System 6.0.6 is essentially 6.0.7 with bugs that were not discovered during the developer release of the LC, Classic and IIsi. The history of System 6 is that .0.x releases primarily provided support for new models with a few bug fixes thrown in (ie no new features). The exceptions are 6.0.7 and 6.0.8 which were tested for new optional features (eg TrueType INIT) whereas earlier System 6 versions were not tested for them. 6.0.7, 6.0.8 and 6.0.8L were roll up releases to complete migration to System 7.
The reason for a single 1.4MB floppy disk is that all of the essential system software fits there. The second disk in a 1.4MB System 6 distribution contains optional software (Font/DA Mover, LaserWriter, AppleShare client) which presumably were being tested separately.
System 6.0.6 is essentially 6.0.7 with bugs that were not discovered during the developer release of the LC, Classic and IIsi. The history of System 6 is that .0.x releases primarily provided support for new models with a few bug fixes thrown in (ie no new features). The exceptions are 6.0.7 and 6.0.8 which were tested for new optional features (eg TrueType INIT) whereas earlier System 6 versions were not tested for them. 6.0.7, 6.0.8 and 6.0.8L were roll up releases to complete migration to System 7.
The reason for a single 1.4MB floppy disk is that all of the essential system software fits there. The second disk in a 1.4MB System 6 distribution contains optional software (Font/DA Mover, LaserWriter, AppleShare client) which presumably were being tested separately.