Yes Neil they are still here & compliment the other half of the Hurst collection of the later catalogues. For several years I have been periodically sending them to Geoff Fletcher who is not only scanning them but feeding the scans to an OCR to construct a database. This will be a formidable resource, there are only a few of the early ones that have yet to be traced.
Although this may ultimately effect the value of these catalogues it will never match up to experience of savouring the detail of the real document, the smell of musty paper, the well thumbed page, the rusting paper clip, the annotations scribbled in the margins be it the price reached, the max bid, the good/bad comments about a vehicle.
I am lucky as I have a few auctioneer's catalogues which are doubled sized with extra pages to record the sale price achieved & minimum bid which apparently was based on prices realised from previous sales.