Appleby Catalogue W number: 
The second series of Prole do Bebê was written in 1921.  Less known than the first book, the second includes these pieces:
- A Baratinha de Papel (The Paper Little Cockroach)
- O Gatinho de Papelão (The Box-Paper Kitten)
- O Camundongo de Massa (The Paste Mouse)
- O Cachorrinho de Borracha (The Rubber Puppy)
- O Cavalinho de Pau (The Wooden Little Horse)
- O Boizinho de Chumbo (The Lead Little Bull)
- O Passarinho de Pano (The Cloth Little Bird)
- O Ursinho de Algodão (The Cotton Little Bear)
- O Lobinho de Vidro (The Glass Little Wolf)
Listen to Sonia Rubinsky play Book 2 of Prole do Bebe at Mbaraka Músicas (click on Villa-Lobos: Brincando seriamente com piano)  
Theses: 
- McLeod, Barbara Anne. 1965. Musical and programmatic techniques in Villa-Lobos' Prole do bébé, series II, for piano. Thesis (M. Music)--University of Texas at Austin.
- Rezende, Marisa Barcellos. 1976. Villa-Lobos: the artist and his Prole do Bebe no. 1 & 2. Thesis (M.A.)--University of California, Santa Barbara, 1976.  
- Young, Deanna DuBois. 1998. Brazilian folk-music influences and problems of performance in Heitor Villa-Lobos's settings of Prole de Bebé, volumes one and two. Thesis (D.M.A.)--University of South Carolina, 1998. 
- McPeck, Marlene Anne Meyer. 1963. Heitor Villa-Lobos and his Prole do bebe. Thesis (M.M.)--University of Nebraska (Lincoln campus)--1963. 
Maria Lúcia Pascoal, "A Prole do Bebê n.1 e n.2 de Villa-Lobos: estratégias da textura como recurso composicional," full-text in Portuguese, abstract in English.
Scores: 
Sheetmusicplus  includes a variety of scores - from the complete books of Prole do Bebe, to individual pieces.
Recordings: 
Both books of Prole do Bebe are included in volume 3  of Alma Petchersky's complete piano series on ASV.  Likewise, Joanna Brzezinska-Maurer plays both series on her VL piano disc.  Sonia Rubinsky plays the second book in volume 2  of her complete series on Naxos.  
Performances: 
The complete series of both books of Prole do Bebe show up in concert fairly often on the Villa-Lobos Concerts database.  More commonly, though, pianists will program the first or second suite separately, or add one or two pieces to their concert program for variety.