I knew already that some black-white traced diagrams were inserted in past, but those outline wireframe diagrams of only black-white are not allowed or not desired to be done anymore. It must have a minimal of quality accuracy in colors. So nowadays they are not approved if submitted, because it is highly disencouraged to be done, cause low representativeness of the building, if it is not only a construction concrete frame phase during u/c or an unfinished remaining structure frame on-hold.
I do not believe also that those diagrams you got, were from SSP cause i made a research and considering the ones already active, not the deleted diagrams, those are the earliest ones this site has, you can check also if i am not wrong:
Marine Building | Vancouver | Canadá | Belongs to initiator the site: Dylan Leblanc | 1930 | 21 floors | office | 97.8m roof.
http://skyscraperpage.com/cities/?buildingID=1
http://skyscraperpage.com/diagrams/?buildingID=1
Building ID: #1
FIRST BUILDING ENTRY
Drawing ID: #84
One Wall Centre | Vancouver | Canadá | Belongs to the fellow Buck McAllister | 2001 | 48 floors | Mix Use | 157.7m Spire.
http://skyscraperpage.com/cities/?buildingID=3
http://skyscraperpage.com/diagrams/?buildingID=3
Building ID: #3
Drawing ID: #1
THE FIRST DRAWING ALREADY ACTIVE IN SITE.
Below is the example an outlined diagram still remaining, from a famous building.
Trump International Hotel & Tower | Chicago | USA
Illustrator: Brian Towsend
Building ID: #16
Drawing ID: #1831
see:
http://skyscraperpage.com/diagrams/?buildingID=16
Brian Towsend was illustrator 173 who did only 2 outlined buildings in black-white, here they are:
http://skyscraperpage.com/diagrams/?memberID=173
he was one of first illustrators and joined on January 2003, 6 years ago and 5 after the launch this site.
If those illustrations that you show from this magazine were earlier and older, it is really hard to know, maybe were already deleted cause quality, who knows.
or registrations of history this site's diagrams were not thought yet. Only 5 years after of 1998, on 2002, better registers started to happen to be followed.
Drawing deleted register started only on 19.12.2002 with Diagram The Chelsea by Dylan Leblanc Drawing ID #7401 Building ID# 7290, it was replaced from same illustrator with Drawing ID# 10898. It means the diagrams which were deleted from a total of 7400 and before of ID#7400, the earlier and most old ones, before this date are not registrated anymore. Anyway, maybe some of them are the ones on the pic you show, taken in 1998.
By the way those are the buildings of your pic:
1- (not recognised from me)
2- Moscow State University | Moscow | Russia | Built | Building ID # 182
3- Chrysler Building | New York | USA | Built | Building ID # 83
4- Empires States Bldg | New York | USA | Built | Building ID # 23
5- WTC | New York | USA | Destroyed | Buildings ID # 15 & 30
6- Sears Towers | Chicago | USA | Built | Building ID # 5 (One of oldest entries documented)
7- Petronas Towers | Kuala Lumpur | Malyasia | Built | Building ID # 22
(Exactly from 1998, so maybe this is probably a comparing of in 1998 about the most tallest famous buildings done in a historical line)