Following the replies to my previous post in this thread, I did a little domestic archaeology in the large cardboard box that holds my old zoo guidebooks. In the lower strata I discovered quite a range from British zoos in the 1970s.
I found that my previous idea was largely correct. I have guidebooks from 21 zoos containing no advertising at all. These include the long established collections at Bristol, Regents Park and Whipsnade and also the newly opened ones at Blackpool, Cotswold, the Curraghs, Knowsley and Marwell. All the bird gardens were also in this category, including Birdland, Birdworld, Flamingo Gardens, Rode and Stagsden.
However as other members have noticed, I was wrong in a few cases: I found four zoos with advertisements in their guidebooks.
Dudley was interesting because my first guide from 1973 has 'Cuddles' the killer whale on the cover . It comprises 56 printed pages, mostly black and white, including the covers and fold-out map, with 11 pages of advertisements. These included pages for Flamingo Park and for Scotia group, which owned both Dudley and Flamingo Park. Most of the others were for local businesses. On the other hand I think my second Dudley guidebook is from 1974 as it includes 'Cuddles', but has elephants on the cover: it is larger format and is printed in full colour, but only has 16 pages and contains no advertising.
Similarly the Chessington guide from 1972 with giraffes on the cover, cost 10p, has 44 printed pages with 9.5 pages of adverts. The 1976 edition, 15p, with penguins on the cover has only 20 pages, with only 2 adverts on the inside covers - for an insurance company (a continuation from 1972) and for JACOBEAN BANQVETS (
sic) at Burnt Stub Mansion in the zoo.
But the 1973 Belle Vue guide takes the prize - it may be the edition that Pertinax has mentioned already. It might send our favourite Yorkist parrot-fancier into raptures

but I found it strange - nostalgic and nauseating in equal measure. Of 48 printed pages, 20.2 pages are advertising! These include adverts for ice cream, rum, 3 types of beer and "Goldwell Drinks for Girls" (which make Al Murray's pub landlord look civilised

). There are also advertisements for the zoo's advertising agent, badge supplier, butcher, butter merchant, electrical contractor, fishmonger, glazier, nurserymen, plumber etc and the rear cover advertises the guide's printers. The last 6 pages are advertorials about Belle Vue's other attractions - the funfair, speedway and the Kings Hall. There are also small photos of celebrities including Douglas Fairbanks Jr with a python and Morecambe & Wise at the chimps tea party. The information about the animals is minimal.
An odd late survival is Paignton's guidebook from 1983 with two tigers on the cover (although its style looks very old-fashioned for that date). It has 52 printed pages and the covers, inside front and rear, and outside rear are tasteful advertisements for Kents Cavern in Torquay, Dennis Local Postcards and Babbacombe Model Village.
I think that this Paignton guide got the balance right. A few well-styled advertisements for local attractions and services seems quite appropriate, particularly for a zoo which attracts a lot of holidaymakers. This might be a possible model for the future - although perhaps it would be more contemporary to ask local companies to sponsor the guidebook, rather than selling them advertising space.
Alan