The blog included hundreds of photographs and notes about picking blackberries, celebrating birthdays, going to a pumpkin patch.
On September 30, Marina Krim posted a photograph of her son after his second birthday. The boy had a mischievous look as he played at a toy kitchen set. "Leo 'Lito' Krim!!!!! Yes, the 2 year old boy," his mother wrote. "One of the best parts of my day is after I drop both girls off at school and have 3 precious hours with little Lito all to myself. Ok, I'm near getting cheesy I adore this boy so much!!!"
Weeks before his birthday, mom and son walked home, with the lad pointing at toy cars, trucks and fire engines, excited in anticipation of his birthday. "Mama, present, present," he said after spotting a toy helicopter.
"Lito, I must say, is a very clever little boy," she wrote. "He is super talkative and just has a million thoughts running through his brain and can express himself amazingly well for an almost-2 year old."
In April, 6-year-old Lucia, known as Lulu, accompanied her father on a take-your-child-to-work event. On the whiteboard in her father's office, she wrote: "I like your ofis Dada. Love LuLu."
Marina Krim logged her final entry at about 2:30 p.m. Thursday, three hours before the killings were discovered.
"Leo speaks in the most adorable way possible. Firstly, he speaks super clearly, so you can understand every word (he) is saying. And he does things like, 'I want a fresh bagel' and 'Dito (what he calls himself) wants cold milk' and most adorable of all, 'No thank you' -- he never uses 'No' alone, it's always paired with 'thank you.'"
Within hours of the killings, hundreds of people had left messages of condolences on the blog; by Friday morning, it had been taken down.