One of the questions on the docket for the Pen Addict podcast this week was from Anthony Sculimbrene (@everydaycomment) regarding a pocket-sized calendar agenda with good quality paper for fountain pens and 18-month or an autumn start was preferable. This is a seriously specific request and, sadly, not many options are available. But I was able to find a few options.
First, I went to Quo Vadis whose reputation for fountain pen friendly paper is universally acknowledged. I was able to find three options, of a diminutive size, all with 64g paper and using an academic calendar (starting in August or September):
I love my current Paperblanks planner but its a larger size. Paperblanks does offer an array of sizes and configurations but are no longer listing their 18-month planners on their site. A few can still be found on Amazon with a couple different cover options.
And finally, you can always take matters into your own hands and use the DIY Planner site and print out the Hipster PDA onto your favorite paper stock.
I hope this will help you on your way. There are definitely more options available if you are willing to wait for the new calendar year.