Good companies with paper catalogues

My grandma is 92 and still has a huge garden (more than a third of an acre) in NE Lincolnshire. Flowers have been her great love since she was a small child and she spent decades surveying wild plants and flowers, and working as a warden for a nature reserve. She needs my parents to do the hard work now, but she still directs proceedings and gets out in the garden in better weather.

She uses the internet for emails and did her grocery shopping online until she couldn't get slots during COVID (apparently a 90+ year old living alone in rural Lincolnshire wasn't enough to get priority status...) but she hasn't managed to learn how to surf, so pottering around online seed catalogues isn't really an option.

She's keen to get some new plants and seeds for this year. Predominantly flowers, and mostly perennials, but she grows (or makes my parents grow!) some fruit and veg too, and might be tempted by the occasional annual.

Can anyone suggest any smaller companies with nice paper catalogues? I've just signed her up for one from Chiltern Seeds, and my Mum has signed her up with Sarah Raven. Any companies that might have unusual varieties would be particularly appreciated as her garden is already very well stocked (she's been there almost 50 years).