The truest answer to violence is love. The truest answer to death is life. The only prevention for violence is for the heart to have no violence within it. We cannot prevent evil through any system devised by mankind. But we can grapple with evil and defeat it, but only with love—real love.
I started reading to DS #1(he was almost 3 when DS#2 came along) from the beginning of my pregnancy.. and by the 4th month he had it memorized.... its a beautiful book and I credit it alot to how my son reacted to his brothers birth... he took it all in stride..even when I was screaming down the house!!!
"i'm a big brother" by joanna cole
ZaZa's baby brother, lucy cousin
my big brother, my valerie fisher
happy birthday, robbie harris
arthur's new baby book,
Joanna Cole's The New Baby at Your House
This book is more about babies and what life is like for them, whereas some of the other titles listed focus more on how a new baby affects family life--so this might not be exactly what you're looking for, but it's a great book all the same!
A lot of cartoons have books about this; Author has a big brother book. Barney does. I think Sesme Street does....and so on. So if your 2.5 year has a freind; you might find a book with that theme.
I got my first newpher a bunch of books; including Im a Big Brother Now, and sent to him while his mom was pg with 2nd son. I think it helped him a lot.
Also get a book of "what baby looks like now" with pictures of the baby developing in you and show week by week what is in you.
Find a book you are confortable with about the actual delivery; even if the 2.5 year old won't be there. there WILL be questions and fears.
My son is 2 1/2 and LOVES that book. It has sketch drawings and there is a series of pictures of when the mom is opening up more and more then the baby's head is out. He loves that part the most. He understands all about what will happen, where the baby will come out, what noises I may make, etc.
I'll look to see who wrote it and edit this later. It's old, don't know if it's easily available- we got it from my midwife.
OK- it's written by Maryann Malecki
Here's the amazon link: book
Amazon says it costs like $100.00- I don't understand why-- maybe you could find the author and ask her for a copy of it personally.