Benny, dill loves cool weather, so I'd get those seeds started asap if you can. The plants will bolt to seed when the weather gets hot, but . . . well the seed heads are the part you use for making pickles. So use or freeze some of the delicious greens, but let some plants make seeds too! I used to make "dill mayonaise" by adding fresh snipped dill to a jar of plain mayo. Tastes fabulous and lasts through the summer. A piece of salmon broiled with that on the top is to die for.
You can start more seeds in August and try for a fall crop of greens, too. An early frost might zap the plants but I did ok with them about half the time. Love fresh dill!
As far as books, and especially vintage books - hey, you're asking a bunch of computer gardeners here, man! I moved to FL from Utah in 2002 and gave all my gardening books for that area to my gardening friends there. They would have been great books for you to use for Colorado, both are 'high desert' sort of gardening and similar zones. Too bad I can't remember which ones they were! It's a completely different ball game gardening here.
Recommend you browse the gardening section of your local library. Then if you come across one that has the info you need, look on Amazon for it. Your County Extension service will have some great resources for you too, I'd imagine.
