Did they have pencils in the 1910s?

Yes, pencils were widely used in the 1910s. By that time, the modern graphite pencil had been around for over a century, with mass production techniques established in the 19th century. Both wooden and mechanical pencils were available, and they were commonly used in schools, offices, and by artists. The 1910s saw improvements in pencil manufacturing, leading to better quality and variety.