With many thanks to Wiki member Fredisland:
http://amstradcpc.fredisland.net/AMSTRAD_CPC_MEMOIRE_ECRITE/PUBS/Amstrad_Catalogue_Summer_1990%5BENG%5D.pdf (http://amstradcpc.fredisland.net/AMSTRAD_CPC_MEMOIRE_ECRITE/PUBS/Amstrad_Catalogue_Summer_1990%5BENG%5D.pdf)
As with the previous link to the CPC Plus press release this catalogue comes from Fredisland.net.
After a little digging it is apparent that there is a great deal of CPC material available and this has been covered in previous threads:
http://www.cpcwiki.eu/forum/news-events/ (http://www.cpcwiki.eu/forum/news-events/)*fr*-fenixinformatique's-news-phenixinformatique-com-amstrad-eu/msg153422/#msg153422
http://www.cpcwiki.eu/forum/general-discussion/amstrad-cpc-memoire-ecrite-a-treasure-trove-of-printed-french-material/msg153404/#msg153404 (http://www.cpcwiki.eu/forum/general-discussion/amstrad-cpc-memoire-ecrite-a-treasure-trove-of-printed-french-material/msg153404/#msg153404)
http://www.cpcwiki.eu/forum/discussion-generale/'memoire-ecrite'-les-torrents/msg153403/#msg153403 (http://www.cpcwiki.eu/forum/discussion-generale/'memoire-ecrite'-les-torrents/msg153403/#msg153403)